Police believe 30-year-old Bashar Aremu may be working as a security guard.
The latest assault was reported Wednesday night in a parking garage on Powell Street. The victim told police she was walking to her car when she was attacked.
"The suspect made statements that led the female to believe he would kill her, force her into the car," Sgt. Fred Dauer said. "The female managed to open the truck and ran for her life out of the parking garage."
Emeryville police describe Aremu as 6 feet tall, about 230 pounds. He speaks with a heavy accent, possibly Nigerian.