Police received a report at about 5:50 a.m. today from a 42-year-old woman in the 1900 block of Hillman Avenue in Belmont who said she had been held against her will overnight.
The victim said she had been out with co-workers at a bar in San Francisco and had met the suspect, who offered to give her a ride to her car at another location in the city, police Lt. Patrick Halleran said.
However, instead of taking her to her car, the suspect drove the victim to various parts of the Bay Area for the next five hours before dropping her off near her home shortly before 6 a.m., Halleran said.
The woman was not injured, and there is no indication that a sexual assault took place, he said.
Detectives were working today to contact the friends of the victim to determine what exactly happened before the victim left with the suspect, he said.
"They went to several bars, so we don't know where exactly she met this subject," Halleran said.
He said that although the woman voluntarily got into the car with the suspect, the case could be treated as a kidnapping "when it got to the point where he wasn't taking her where she wants to go."
The suspect is described as a black man in his 40s who is about 6 feet 2 inches tall with a medium build. He may reside in the East Bay, and was driving a newer-model black Lexus four-door sedan with chrome rims, according to police.
Anyone with information about the incident is asked to call Belmont police at (650) 595-7400.