A juror in Scott Peterson's (search) trial chatted to Laci Peterson's brother as they passed through a courthouse metal detector, according to pool video footage.

It was unclear what Juror No. 5, an airport screener, said to Brent Rocha (search) on Thursday, or whether Rocha responded beyond flashing a brief smile.

KTVU-TV also reported Friday that the same juror whispered to Scott Peterson's attorney, Mark Geragos (search), earlier in the week.

It was not immediately clear whether the court would find the actions inappropriate or indeed whether either the defense or prosecution would challenge them.

No court session was scheduled Friday.

Peterson, 31, is accused of murdering his pregnant wife, Laci, on or around Dec. 24, 2002, then dumping her body from his small boat into San Francisco Bay. He told police he went fishing that morning and returned to an empty house.

In March, a juror in the Tyco corporate corruption trial in New York made what some interpreted as an "OK" signal to the defense. The judge declared a mistrial after the juror's name was disclosed in the media and she reported receiving threats.