A 20-year-old Stockton man has been arrested in connection with a fatal crash that occurred Sunday evening after a group of motorcyclists drove the wrong way on the Bay Bridge.

The death followed reports Sunday afternoon that several hundred motorcyclists were “running amok” in San Francisco, said CHP SF Public Information Officer Mark Andrews.

Around 5:04 p.m., a group of about 15 bikes splintered from the main group and entered the Bay Bridge heading east, Andrews said, but when the drivers saw CHP patrols set up to monitor for stunts and other sideshow activity, they turned around and started heading the wrong direction.

The splinter group of cyclists exited at the Sterling Street and Fourth Street ramps, traversed downtown San Francisco and re-entered the bridge the wrong way on the Fremont Street onramp, heading east on the upper deck of the westbound Bay Bridge, Andrews said.

The CHP attempted to divert the group going against traffic onto the Treasure Island ramp but was unsuccessful, and the cyclists reached the new span of the bridge. The man who was later killed, identified by the Medical Examiner’s Office as 20-year-old Christopher Lee of Beaumont, Texas, crashed his dirt bike near the incline and was picked up as a passenger on another dirt bike, which turned around and began heading west on the bridge and then exited and attempted to hide from police near the Treasure Island tunnel, Andrews said.

To flee police, the dirt-bike driver attempted to jump the median wall, and that caused the passenger to be ejected onto the Bay Bridge, where he was hit by a truck and killed, Andrews said.

The driver, who was also injured, has been arrested and identified by the CHP as 20-year-old Humza Zahoor.

He remained in custody in San Francisco County Jail Tuesday, held on suspicion of murder, evading an officer with willful disregard for safety, resisting or obstructing a peace officer, participating in a speed contest causing injury and acting as an accessory after the fact.

The collision shut down two lanes of eastbound I-80 east of the Treasure Island tunnel for hours Sunday evening, causing major delays. According to the CHP, all lanes were reopened by shortly after 9 p.m.

Editor’s note: This story has been updated with additional information including the identity of the suspect and the charges he is being detained on.

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