UPDATE: Search For Missing Oakland Woman Moves From Vallejo To Vacaville

By Bay City News Service

Authorities who have been searching an area of Vallejo for a missing Oakland woman announced this afternoon that the search is moving to a park in Vacaville.

Sandra Coke, 50, was last seen at her home in the 600 block of Aileen Street around 8:30 p.m. Sunday. Her 15-year-old daughter last saw her that night, and family members said she was meeting someone with information about the family's stolen dog.

When she never returned her daughter reported her missing. Her car was found two miles away from her home the following night and one of her two cellphones was eventually found discarded along Interstate Highway 80 in Richmond.

Thursday evening, a massive search involving several law enforcement agencies, including the Oakland Police Department and the Solano County Sheriff's Office, was focused on an area near Lake Chabot behind Six Flags Discovery Kingdom in Vallejo.

The search there resumed this morning with boats and dogs scouring the lake and surrounding area.

Just after noon, Solano County sheriff's officials and Oakland police said the search was moving to Lagoon Valley Park in Vacaville. Authorities declined to elaborate what prompted the operation to move further into Solano County.

Since Coke's disappearance police have arrested a person of interest.

Oakland police Officer Johnna Watson said Coke was seen Sunday night with Randy Alana, 56.

Alana was arrested on an unrelated parole violation. He had dated Coke in the past, according to police, and is a registered as a high-risk sex offender.

He has prior convictions for rape, rape in concert with force or violence and kidnapping to commit a sex offense.

Coke is an investigator at the federal public defender's office in Sacramento. She has not gone missing before and it is uncharacteristic of her to leave her daughter alone at home unexpectedly, family members said.

Coke's sister, Tanya Coke, and her childhood friend, Wendy Springer, have announced a $100,000 reward for anyone who can provide information that will directly lead to finding Coke.