(Scroll down for video) A man was arrested after raping a woman for at least 10 minutes on a busy Los Angeles City bus, according to police reports.
The woman, 18, was raped for 10 minutes on the Metro Bus 217. She was going home from school when the incident happened Wednesday afternoon.
Portions of the rape were captured on a security camera and officials of the Los Angeles County Sheriff Department arrested a suspect, Kerry Trotter, on Friday morning, hours after releasing still photos of the alleged assailant.
Authorities said Trotter, 20, is a parolee and a person who had been previously investigated on suspicion of sexual assault.
"It was a crime of opportunity," Sgt. Dan Scott said. "Unfortunately, the victim was in the wrong place at the wrong time. He followed her onto the bus and assaulted her."
Scott said detectives believed Trotter rode buses in search of victims.
In the incident this week, both the suspect and the victim got on the bus at 5:00 p.m. at the corner of La Cienega and Jefferson Blvds., near the Expo Line train station.
Sheriff's officials said they doubt the driver or passengers of the bus knew what was happening.
"He immediately approached her and began the assault," Scott said. "The suspect had his back to the front of the bus. Generally, people think of rape as a kind of an attack in which someone has been thrown down. It is not always the case," he said.
"The victim did not scream," he said. "The victim told the detective that she was surprised, and did not know what to do. She feared for her safety and her life."