WHITE CENTER, Wash. -- A teenage boy was knocked unconscious after an altercation that started on a Metro Bus in White Center Monday night, reported KIRO 7 Eyewitness News.

A Metro spokesman said the boy was being harassed by a group of kids.

When the victim exited the bus, someone in the group of teenagers hit the boy and knocked him unconscious, the spokesman said.

Responding police officers detained the boys while medics revived the victim and transported him to the hospital.

The victim's condition is not known.