📄 Cross-examination of Gregory Matheson (part 3) — Wednesday, May 3, 1995
Address:
C:\DEPT103\CRIMINAL\1995\MAY\3\CROSS-EXAMINATION-OF-GREGORY-M.DOC
TRIAL
▲ Day 66 of 167

Cross-examination of Gregory Matheson (part 3)

Witness: Gregory Matheson
Examiner: Robert Blasier
Called by: Prosecution • Date: Wednesday, May 3, 1995 • Utterances: 246
Defense attorney Robert Blasier methodically cross-examines LAPD criminalist Gregory Matheson about the handling of the socks found at OJ Simpson's Rockingham estate (item 13). Blasier establishes that the socks were largely ignored in early evidence meetings, went unexamined for 2-3 months, were never photographed before being altered by cutting, and that the lab applied a double standard — extensively documenting evidence when defense was present but not when conducting their own examinations. The session ends with brief questions establishing Matheson had no direct role in Bronco examinations and that notes were not reviewed before being copied and distributed.
1 MR. BLASIER:

Thank you, your Honor. Good evening--good afternoon.

THE JURY: Good afternoon.

CROSS-EXAMINATION (RESUMED) BY MR. BLASIER

2 MR. BLASIER:

Mr. Matheson, I want to ask you some questions about the socks, item no. 13. Now, would you agree that of the items collected at Rockingham this was obviously a very significant piece of evidence?

3 MR. GOLDBERG:

Calls for speculation, conclusion.

4 THE COURT:

Overruled.

5 MR. MATHESON:

Yes, it was.

6 MR. BLASIER:

And when did you first become aware that a pair of socks had been found at the foot of Mr. Simpson's bed?

7 MR. MATHESON:

It was probably when--upon doing the inventory on June 29th.

8 MR. BLASIER:

That is the first time you became aware of the socks?

9 MR. MATHESON:

That is the first moment that sticks in my mind, yes.

10 MR. BLASIER:

Didn't you have a meeting on the 14th where you discussed the evidence that had been obtained on the 13th with Mr. Fung and Miss Mazzola and others at the lab?

11 MR. MATHESON:

We discussed some of the items, yes.

12 MR. BLASIER:

And no one discussed the socks?

13 MR. MATHESON:

Not to my knowledge. At that point I believe our focus was mainly on the items picked up at the Bundy scene and the glove from Rockingham.

14 MR. BLASIER:

Now, you had--before the 29th you had a number of meetings, did you not, with Miss Clark, and other people at the lab, about the items that were collected on the 13th, did you not?

15 MR. MATHESON:

I've had many meetings with the D.A.'s office in association with this case. Yes, I did.

16 MR. BLASIER:

Before the 29th?

17 MR. GOLDBERG:

Not relevant, your Honor.

18 THE COURT:

Overruled.

19 MR. MATHESON:

I did meet with them at time and I'm sure we talked about evidence, but I don't specifically remember discussing regarding the socks.

20 MR. BLASIER:

Do you want to refer to your chron notes in terms of--let me ask you this: You had a meeting with Detective Vannatter on the 15th to discuss what evidence should be examined and tested, did you not?

21 MR. MATHESON:

Can I refer to my notes?

22 MR. BLASIER:

Sure.

23 (Brief pause.)
24 MR. MATHESON:

We did have a discussion regarding what additional items we wanted to start analyzing.

25 MR. BLASIER:

And that was in the morning of the 15th, correct?

26 MR. MATHESON:

Yes, sometime in the A.M.

27 MR. BLASIER:

And it is your recollection that the socks were never mentioned?

28 MR. GOLDBERG:

Not relevant, your Honor.

29 THE COURT:

Overruled.

30 MR. MATHESON:

I don't specifically remember whether they were mentioned. They were not one of the items chosen to continue work on.

31 MR. BLASIER:

Did you at any time on your own make an effort to review what items had actually been collected at Rockingham on the 13th?

32 MR. MATHESON:

From beginning to end all the items, no, I don't believe so.

33 MR. BLASIER:

And you didn't have Fung's notes available to you, correct?

34 MR. MATHESON:

Well, on the 13th I don't believe they were even back at the laboratory by the type I left.

35 MR. BLASIER:

On the 14th?

36 MR. MATHESON:

We did look at a number of items, mainly at blood swatches and that type of thing and the gloves.

37 MR. BLASIER:

Where were the socks when you were looking at items? Do you have any idea?

38 MR. MATHESON:

I would have to assume they were somewhere in the evidence processing room.

39 MR. BLASIER:

And you are assuming that because there is no record that shows where they were, correct?

40 MR. GOLDBERG:

Argumentative.

41 THE COURT:

Sustained.

42 MR. BLASIER:

Is there a record that shows where they were?

43 MR. MATHESON:

As mentioned earlier, no, other than what they say they took into the room and what was eventually booked.

44 MR. BLASIER:

Now, there were approximately 19 times or 21 items seized at Rockingham on the 13th. Who made the decision as to which items you guys would talk about on the 14th?

45 MR. GOLDBERG:

Irrelevant, beyond the scope of direct and also--

46 THE COURT:

Overruled.

47 MR. GOLDBERG:

--unintelligible.

48 THE COURT:

Overruled.

49 MR. MATHESON:

At--on that date--I mean, it is very possible that the socks came up. It is not sticking in my mind because we didn't choose to do anything with it at the time. We were dealing with things that we knew at that point had blood on them, such as the stains and the gloves.

50 MR. BLASIER:

Did you know at that time that the search warrant that had been executed at Rockingham in the afternoon of the 13th, that the primary thing that was being searched for was bloody clothing?

51 MR. GOLDBERG:

Assumes facts not in evidence, no personal knowledge.

52 THE COURT:

Overruled. Did you know that?

53 MR. BLASIER:

Did you know that?

54 MR. MATHESON:

I subsequently heard that. I didn't know that at the time.

55 MR. BLASIER:

Now, you had a meeting with Marcia Clark in the afternoon on the 15th, correct?

56 MR. MATHESON:

Referring again to my chronology notes. My notes reflect, "work in progress DDA. Marcia Clark confirm desire to submit evidence to RFLP without further conventional work." I--well, that's correct. That was in Commander White's office, yes, she was present.

57 MR. BLASIER:

Who else was present?

58 MR. MATHESON:

There was a large number of people in that room.

59 MR. BLASIER:

And the purpose for that meeting was to discuss what evidence was collected and what you should do with it, correct?

60 MR. MATHESON:

No, I don't believe we got into a lot of technical discussion at that point. I believe this involved some of the detectives and other people. I think we talked about the crime scene in general.

61 MR. BLASIER:

Were there other meetings between the 15th and the 20th, the day of the Grand Jury hearing, about the evidence that had been seized in this case?

62 MR. MATHESON:

May I refer again--look through my notes, my chronology, and see if it reminds me of anything.

63 (Brief pause.)
64 (Discussion held off the record between Defense counsel.)
65 MR. MATHESON:

I don't have any notations of any additional meetings that were held regarding specific discussions of the evidence.

66 MR. BLASIER:

Do you remember there being a lot of meetings around this time about this case?

67 MR. MATHESON:

I recall talking on the phone quite a bit with people about the case and meeting with criminalists and the like.

68 MR. BLASIER:

Now, on June 20th you were at the Grand Jury waiting to testify from 7:45 in the morning until 10:15 in the morning, correct?

69 MR. GOLDBERG:

Not relevant, your Honor.

70 THE COURT:

Overruled.

71 MR. MATHESON:

Yes, I was.

72 MR. BLASIER:

And you were there with Dennis Fung and Detective Vannatter waiting, correct?

73 MR. MATHESON:

Along with Mr. Yamauchi and Detective Lange, yes.

74 MR. GOLDBERG:

The record should reflect that the witness looked at his notes before answering.

75 THE COURT:

Yes.

76 MR. BLASIER:

Did you have any discussion about what the evidence was in the case?

77 MR. MATHESON:

I don't particularly remember what we talked about.

78 MR. BLASIER:

Did the subject of the socks come up then?

79 MR. MATHESON:

I don't know.

80 (Discussion held off the record between Defense counsel.)
81 MR. BLASIER:

By the way, Andrea Mazzola was not at the Grand Jury hearing, was she?

82 MR. GOLDBERG:

Irrelevant.

83 THE COURT:

Sustained.

84 MR. BLASIER:

Did you participate in any discussions regarding the role that Andrea Mazzola would play in the Grand Jury hearing?

85 THE COURT:

Sustained.

86 MR. BLASIER:

On the 21st at 11:15 you had a meeting with Michele Kestler and Dennis Fung and Collin Yamauchi to discuss the evidence, did you not?

87 MR. MATHESON:

According to my chronology, yes, that's correct.

88 MR. BLASIER:

Did you discuss the socks at all?

89 MR. MATHESON:

Just by--

90 MR. GOLDBERG:

Not relevant.

91 THE COURT:

Overruled.

92 MR. MATHESON:

Just by looking at this, I don't remember.

93 MR. BLASIER:

Now, when the property was--they started to book the property on the 16th. Did you follow that in any way to determine what items were being booked?

94 MR. MATHESON:

I don't believe they started to book it on the 16th. That was the date when the items and the reports or the property report was delivered to our evidence control unit.

KEY QUOTE
95 MR. BLASIER:

That is the first date on the various computer systems used to track items, correct, and track packages?

96 MR. MATHESON:

Yes.

97 MR. BLASIER:

For any item?

98 MR. MATHESON:

I believe so. I know that is true of the item that came out of the laboratory.

99 MR. BLASIER:

Are you aware of the socks even being photographed at SID after they were collected before they were booked?

100 MR. MATHESON:

No, I'm not.

101 (Discussion held off the record between Defense counsel.)
102 MR. BLASIER:

Now, was it June 29th was the first time that you looked at the socks?

103 MR. MATHESON:

That is the first time I remember seeing them, yes.

104 MR. BLASIER:

Now, you testified that blood is difficult to see on darker clothing such as the socks, correct?

105 MR. MATHESON:

Yes.

106 MR. BLASIER:

And you knew that at the time that you examined them, correct?

107 MR. MATHESON:

I know that in general it is tougher to see on black surfaces, that's correct.

108 MR. BLASIER:

And so when you examined those socks to see if there might be some evidence on them, did you look at them more carefully than if they had been white?

109 MR. MATHESON:

Well, that wasn't the process that was going on there. I was not doing a scientific examination of those items at that point. We were trying to do an inventory of the swatches, the items that were there, and I made a general notation on that, log or inventory, as to what we would be doing in the future with it.

110 MR. BLASIER:

Where was that done?

111 MR. MATHESON:

That was done in Miss Kestler's office.

112 MR. BLASIER:

Do you have a high-intensity light available to you to look at the socks there?

113 MR. MATHESON:

No.

114 MR. BLASIER:

How far away is one?

115 MR. GOLDBERG:

Not relevant.

116 THE COURT:

Overruled.

117 MR. MATHESON:

Let's see. We would have one in the laboratory, so it is, I don't know, probably 50, 75 feet away.

118 (Discussion held off the record between Defense counsel.)
119 MR. BLASIER:

Why did you write down "blood search" on the notes of that meeting that day?

120 MR. MATHESON:

Because that was an indication of something we were planning on doing to those items in the future.

121 MR. BLASIER:

What did you write down "none obvious" for?

122 MR. MATHESON:

It was an indication to me that we opened them up to take a look at them for the inventory and there was no blood obvious on it.

KEY QUOTE
123 MR. BLASIER:

So you did examine at least?

124 MR. MATHESON:

Well, I looked at them, yes.

125 MR. BLASIER:

Did you take any pictures that day?

126 MR. MATHESON:

No.

127 MR. BLASIER:

Now, you testified that you took some cuttings from the socks on September 18th, correct?

128 MR. MATHESON:

Referring again to my notes.

129 MR. BLASIER:

Yes.

130 MR. MATHESON:

That's correct.

131 MR. BLASIER:

Now, going back to the 29th when you filled out these notes about blood search, "none obvious," who else was present when that meeting took place?

132 MR. MATHESON:

The inventory that we did at that time was myself, Miss Kestler and Collin Yamauchi.

133 MR. BLASIER:

Was there any discussion at this meeting about the potential significance of these socks?

134 MR. MATHESON:

No, I don't believe so.

135 MR. BLASIER:

Now, why did--you did indicate that somebody should do a blood search? Is that what that indication means?

136 MR. MATHESON:

At some point that was our intent, yes.

137 MR. BLASIER:

How had those socks been stored up until the 29th?

138 MR. MATHESON:

I would have to see if I can find some notes. I believe they were stored in a box in the freezer, but I'm not sure of that.

139 MR. BLASIER:

Do you have a record you can refer to?

140 MR. MATHESON:

I'm trying to figure out where it would be.

141 (Brief pause.)
142 MR. MATHESON:

Okay. With the information I have with me now, it is indicated that it was part of a very large box which also contained the swatches and a number of items that were all stored frozen.

143 MR. BLASIER:

Now, are you aware that that evidence, that box of evidence, was examined by Susan Brockbank who is a criminalist in your office on the 21st of June?

144 MR. MATHESON:

I am aware that she checked it out, yes.

145 MR. BLASIER:

And did she ever come to you and say, "these socks are real important. We better look at them quickly," anything like that?

146 MR. GOLDBERG:

Calls for hearsay, argumentative.

147 THE COURT:

Overruled.

148 MR. MATHESON:

She did not say that, no, not to my knowledge.

149 (Discussion held off the record between Defense counsel.)
150 MR. BLASIER:

When is the first time, to your knowledge, that anyone at SID took a picture of those socks after they were seized?

151 MR. MATHESON:

I'm not sure. I don't know if they were photographed when Mr. Yamauchi first did a blood search on them or not.

152 MR. BLASIER:

When did he first do a blood search on them?

153 MR. GOLDBERG:

No personal knowledge.

154 MR. BLASIER:

If you know?

155 MR. MATHESON:

Off the top of my head I wouldn't know and I don't have those notes with me, I don't believe.

156 MR. BLASIER:

Do you have a rough idea what month it was?

157 MR. MATHESON:

Let's see. I did my--

158 MR. GOLDBERG:

No personal knowledge, foundation.

159 THE COURT:

Overruled.

160 MR. MATHESON:

It would have to have been before I did my examination on October--excuse me--on September 18th, so it would have been in either August or September.

161 MR. BLASIER:

Should you take pictures of an item of evidence when you are going to alter it in some fashion, both before and after you do the alteration?

162 MR. MATHESON:

That is a good practice, yes.

163 MR. BLASIER:

When you took cuttings of those socks on the 18th, did you have any pictures taken before you altered them?

164 MR. MATHESON:

No, I did not.

165 MR. BLASIER:

Did you have any pictures taken after you altered them?

166 MR. MATHESON:

Not at that time, no.

167 MR. BLASIER:

The pictures that were used here, I believe yesterday for you to identify, when were they taken?

168 MR. MATHESON:

They were taken at some later date at one of the laboratories that worked on these items.

169 THE COURT:

Mr. Blasier, which item are you referring to?

170 MR. BLASIER:

It was a picture of the socks.

171 (Discussion held off the record between Defense counsel.)
172 THE COURT:

214-A and B.

173 MR. BLASIER:

214-A.

174 (Discussion held off the record between Defense counsel.)
175 MR. BLASIER:

One of the policies that is in place in your lab is that items, when they come into the lab, are photographed so that you can preserve their appearance and their condition when you first get them; isn't that correct?

176 MR. MATHESON:

No, it is not.

177 MR. BLASIER:

Do you think that is a good practice?

178 MR. MATHESON:

The items are photographed in the scene. It shows their appearance at the time they are collected, but we do not then photograph them again as soon as they come into the laboratory.

179 MR. BLASIER:

Why not?

180 MR. MATHESON:

Well, it is a combination of that it is not necessary and we deal with large quantities of evidence. It is a matter of practicality.

181 MR. BLASIER:

Now, representatives of the Defense have been at the lab a number of times, correct?

182 MR. MATHESON:

Yes, they have.

183 MR. BLASIER:

And every time someone from the Defense has been at the lab to look at an item it has been extensively photographed by your photographer, correct?

KEY QUOTE
184 MR. MATHESON:

Yes, that's correct.

185 MR. BLASIER:

Both before we look at it and after we look at it, correct?

186 MR. MATHESON:

Yes.

187 MR. BLASIER:

When you conduct examinations of evidence yourself when we weren't there, do you photograph what you do?

188 MR. MATHESON:

Not every item, no.

189 MR. BLASIER:

How do you decide which ones to document by photographing and which ones not to?

190 MR. MATHESON:

Historically as a rule very few items are photographed within the laboratory on a regular basis. At this point--well, it still is that many times the evidence items are not photographed.

191 MR. BLASIER:

Can blood on clothing change over time in terms of your ability to extract information from it?

192 MR. MATHESON:

Yes, particularly depending on its storage conditions.

193 MR. BLASIER:

When you decided to do a blood search on the 29th did you give anybody any instructions that we should do this fairly quickly?

194 MR. MATHESON:

No.

195 MR. BLASIER:

Can you estimate the number of months it was from the time those socks were collected until someone looked at them carefully?

196 MR. MATHESON:

It would have been two to three months, something like that.

197 (Discussion held off the record between Defense counsel.)
198 MR. BLASIER:

This meeting on the 29th where you evaluated the evidence for purposes of possible testing, your notes indicate that the various items that were examined were examined very carefully, including the measurements of each individual swatch, weren't they?

199 MR. MATHESON:

Referring to my copy of those notes, we have measurements, yes, indicated under the "quantity" area on each of the swatches.

200 MR. BLASIER:

Is it accurate that this was not just a brief meeting in passing, that this was a meeting that you took some time to carefully review these items?

201 MR. MATHESON:

It took quite awhile to do the inventory, yes.

202 (Discussion held off the record between Defense counsel.)
203 MR. BLASIER:

Are you aware of Andrea Mazzola's testimony in August to the effect that she wrote her initials on the coin envelopes of the blood drops that she collected?

204 MR. GOLDBERG:

Not relevant.

205 MR. MATHESON:

No, that--

206 THE COURT:

Sustained.

207 MR. MATHESON:

Excuse me.

208 MR. BLASIER:

Would it be of concern to you as a supervisor of criminalists if you reviewed evidence items that to your knowledge had originally been signed by a criminalist and those items were not signed when you looked at them?

209 MR. GOLDBERG:

Argumentative and irrelevant.

210 THE COURT:

Sustained. Rephrase the question.

211 MR. BLASIER:

Do you have any method that you use of examining items of evidence at a particular time to see whether it is the same evidence that was collected originally?

212 MR. MATHESON:

We do not have an ongoing formal policy of checking the item that is being examined for, you know, say serology or trace or whatever, against an original property report or something.

213 MR. BLASIER:

Would it be of concern to you if items that you examine, you expected to have initials on them by the person collecting them and they weren't there?

214 MR. GOLDBERG:

Argumentative, irrelevant.

215 THE COURT:

Overruled.

216 MR. MATHESON:

Are you saying that if I received a packing material that had no initials on it?

217 MR. BLASIER:

That had initials from somebody other than the person you thought had collected it?

218 MR. GOLDBERG:

Your Honor, this is argumentative and it is not relevant.

219 THE COURT:

Sustained as phrased.

220 (Discussion held off the record between Defense counsel.)
221 THE COURT:

On the 29th when you were going through all these items did you notice anything unusual about the initials on these packing items?

222 MR. MATHESON:

No, I did not.

223 (Discussion held off the record between Defense counsel.)
224 MR. BLASIER:

Hypothetically, if a criminalist had put their initials on an envelope that contained an item of evidence that that criminalist collected and you later examined that envelope and there was no signature on it or someone else's signature on it, would that cause you concern?

225 MR. GOLDBERG:

Improper hypothetical.

226 THE COURT:

Sustained.

227 MR. GOLDBERG:

Not relevant, argumentative. Can we approach?

228 THE COURT:

No. Sustained.

229 (Discussion held off the record between Defense counsel.)
230 MR. BLASIER:

Mr. Matheson, I want to ask you some questions about the Bronco. The Bronco was impounded on the 13th, correct?

231 MR. MATHESON:

I was not involved in any of that. I've heard that.

232 MR. BLASIER:

Were you involved at all in any examinations done on the Bronco during the course of the time it was impounded?

233 MR. MATHESON:

No, I was not.

234 MR. BLASIER:

Did you make any effort to follow what the people that worked under you were doing with respect to examining the Bronco?

235 MR. MATHESON:

To some extent, yes; not moment by moment.

236 MR. BLASIER:

But you were reviewing with them the various searches that they did of the Bronco, correct?

237 MR. MATHESON:

I would hear what items were collected, that type of thing, yes.

238 MR. BLASIER:

Did you review any of those notes as they were prepared?

239 MR. MATHESON:

No, I did not.

240 MR. BLASIER:

Is there some reason why you did not review those notes?

241 MR. GOLDBERG:

Not relevant.

242 THE COURT:

Overruled.

243 MR. GOLDBERG:

Beyond the scope.

244 MR. MATHESON:

Well, as was previously mentioned, it is still consistent with the notes from both Bundy and Rockingham. I had not received them prior to their being copied and distributed.

245 MR. BLASIER:

To your knowledge did anybody review them before they were copied and distributed?

246 MR. MATHESON:

Not to my knowledge, no.

Temperature

tense

Key Quotes (5)

Gregory Matheson
It would have to have been two to three months, something like that.
Matheson admits the socks went roughly 2-3 months from collection before anyone carefully examined them — a significant gap for potentially critical evidence.
Gregory Matheson
No, I did not.
Matheson confirms he took no photographs before cutting the socks on September 18th, violating good forensic practice he had just acknowledged moments earlier.
Robert Blasier
Every time someone from the Defense has been at the lab to look at an item it has been extensively photographed by your photographer, correct? Both before we look at it and after we look at it, correct?
Blasier exposes a double standard: the lab photographs evidence during defense visits but not during its own examinations — undermining the integrity of the documentation process.
Gregory Matheson
It was an indication to me that we opened them up to take a look at them for the inventory and there was no blood obvious on it.
Matheson explains his 'none obvious' notation — done without high-intensity lighting, in an office 50-75 feet from the lab, with no photos taken.
Gregory Matheson
I don't believe they started to book it on the 16th. That was the date when the items and the reports or the property report was delivered to our evidence control unit.
Matheson's correction reveals ambiguity in the booking timeline, contributing to the defense's chain-of-custody attack.

Evidence (2)

People's 13
Socks found at the foot of OJ Simpson's bed at Rockingham
challenged — documentation gaps, delayed examination, no pre-alteration photographs
214-A and B
Photographs of the socks
discussed — Blasier establishes photos were not taken at time of collection or before cuttings, only later at an unspecified lab

Notable Exchanges (3)

Robert BlasierGregory Matheson
Blasier gets Matheson to confirm that defense visits are always extensively photographed before and after, then contrasts this with Matheson admitting he did not photograph the socks before or after cutting them on September 18th.
strategic
Robert BlasierGregory Matheson
Blasier establishes that the socks sat in a freezer box for 2-3 months without careful examination, despite being seized during a search specifically for bloody clothing and despite multiple meetings about evidence during that period.
revealing
Robert BlasierGregory Matheson
Blasier attempts a hypothetical about mismatched initials on evidence envelopes, clearly aimed at challenging chain of custody. Judge Ito sustained objections to multiple phrasings, but Ito himself then asked a neutral version of the same question directly — to which Matheson said he noticed nothing unusual.
strategic

Credibility Attacks (3)

⚔ Gregory Matheson
Inconsistent standards
Blasier demonstrates that SID photographed evidence exhaustively during defense visits but that Matheson himself took no photographs before cutting the socks — undermining the completeness of prosecution-side documentation.
⚔ Gregory Matheson
Omission/negligence
Matheson admits the socks were not discussed in key early meetings, not photographed when collected or when examined, not carefully inspected without proper lighting, and went 2-3 months before any thorough examination despite being collected in a search for bloody clothing.
⚔ Gregory Matheson
Lack of supervisory oversight
Matheson acknowledges he did not review Fung's or Mazzola's notes before they were distributed, and had no formal policy to verify evidence integrity at intake — reinforcing the defense theme of systemic sloppiness.

Witness Demeanor

Frequently asked to refer to chronology notes before answering
Multiple pauses noted while consulting notes
Corrected himself mid-answer ('October--excuse me--on September 18th')
Gave an aside 'That is a good practice, yes' when asked about photographing before altering evidence — immediately before admitting he did not do so

Objections

22 objections (8 sustained, 13 overruled)
Proceeding 5901 • 246 utterances • Prosecution witness
Criminal Trial
Department 103
⚖️ Start
📂 MAY 3, 1995 📄 Cross-examination of Gregory M
MAY 3, 1995 KRT DvH TD