Laci Peterson

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It was a key moment for the defense in the Scott Peterson murder trial in California, but a police official is downplaying it.

Peterson's lawyer Mark Geragos got a police detective to admit he failed to mention a witness who could help Peterson's case.

But a Modesto police spokesman says in an interview that the witness account was included in another detective's report and that the report has been provided to defense lawyers.

Spokesman Ed Steele describes Thursday's defense claims that the information was omitted as "Geragos' spin." Steele says he hopes prosecutors will alert the jury when the trial resumes on Monday.

Peterson is accused of killing his pregnant wife Laci and their unborn child.