ELLIOT SPAGAT, Associated Press Writer
SAN DIEGO - Remains that washed ashore in the San Francisco Bay this week were those of Laci Peterson and her unborn child, California's attorney general said Friday night.
Meanwhile, Scott Peterson was arrested in San Diego on Friday in connection with the Christmas Eve disappearance of his pregnant wife, a sheriff's deputy said.
Scott Peterson was being transported to Modesto, according to the deputy who spoke on condition that his name not be used.
Peterson has not been seen in public since the decomposed remains washed ashore in Richmond, 90 miles away from the couple's Modesto home. The bodies were found on Sunday and Monday by people walking the shoreline.
Scott Peterson's attorney, Kirk McAllister, had refused to disclose his client's whereabouts this week. McAllister did not immediately return a telephone message Friday from The Associated Press.
Scott Peterson's parents live in Solana Beach, north of San Diego. A knock at the door of their home went unanswered Friday evening.
Peterson had told police he last saw his 27-year-old wife Christmas Eve as he left to go fishing at a Berkeley marina, which is three miles from where the bodies were found.
Modesto police seized his boat, pickup truck and nearly 100 items from the couple's house but had not formally named him as a suspect in the disappearance.
From virtually the moment his wife was reported missing, Scott Peterson's moves and statements have been scrutinized by authorities.
Peterson traded in his wife's Land Rover for a new pickup truck, considered selling their home and eventually admitted an extramarital affair with a massage therapist while his wife was pregnant with the couple's baby.
Peterson said he'd told his wife about the affair in the days before she vanished.
"It (the affair) was not a positive, obviously ... but it was not something that we weren't dealing with," he told ABC's "Good Morning America." "It wasn't anything that would break us apart."
The affair turned Laci Peterson's family against the son-in-law they had earlier supported. They begged him to cooperate with Modesto police, who had labeled him "uncooperative."
Scott Peterson launched his own search effort, separate from the one organized by his wife's family and sanctioned by police. At one point, as searchers looked in the San Francisco Bay and around Modesto, Scott Peterson showed up in Los Angeles to distribute fliers to volunteers at a local hotel.
"We simply have to expand the geographical area," he said at the time.
In February, Scott Peterson told MSNBC he missed his wife.
"I can't drive. I can't sleep," he said then. "Sometimes I feel I just can't do it. I feel like I'm in a dark corner and I just can't function."