The suspect, whose name and age weren’t immediately released, was booked for investigation of rape, said Sgt. Dan Scott of the Los Angeles County Sheriff’s Department.
Authorities said a man boarded the bus with the woman in suburban Culver City, followed her to the back of the bus, and forced himself on her late Wednesday afternoon.
A lone witness tried to alert the bus driver that the rape was happening, but it continued for about 10 minutes until the man stopped and exited the bus.
The 18-year-old woman has the mental capacity of a 10-year-old, Scott said. After the attack, she reported it to the driver, Scott added.