Anthony Chambers, of Los Angeles, was booked late Sunday for investigation of murder and remained held on $1 million bail, sheriff’s investigators said.
No motive has been given for the shooting, which happened early Sunday when Chambers and the driver were believed to be the only people on the Metropolitan Transportation Authority bus. The shooting occurred just blocks from the route of the Amgen Tour of California bicycle race.
The driver, whose name wasn’t released, was hit in the torso and died at a hospital.
Witnesses told investigators they saw Chambers climb out a window and run down the street. He was arrested soon after.
Two firearms were recovered and a suspicious package was found on the bus but it wasn’t determined to be an explosive device, authorities said.
A makeshift memorial of candles and flowers has been left at the shooting site.