DIAMOND BAR (CNS) - A motorcyclist was killed in a collision today in Diamond Bar, police said.
Officers responded at 2:46 a.m. to the northbound Orange (57) Freeway just south of Diamond Bar Boulevard, the California Highway Patrol said.
The motorcyclist was pronounced dead at the scene, police said.
The crash closed three lanes of the freeway for several hours.
No further information regarding the collision was available, the CHP said.
The cause of the collision is under investigation.