(KRON) — An off-duty Alameda County Sheriff’s Deputy was killed after being rear-ended by a tour bus carrying Tesla employees Friday morning on an East Bay freeway, according to California Highway Patrol.

The collision was reported just after 7:00 a.m. on eastbound Interstate 580 at Grant Line Rd. near Altamont Pass, according to CHP.

The deputy was driving a Volkswagen when hit by the bus that was en route to Stockton.

The bus was carrying 55 employees of Tesla, Inc. at the time and one passenger was treated for minor injuries at the scene and released.

Three lanes of Highway 580 were initially closed to traffic in the area. All lanes were reopened by 2 p.m.

Alameda County Sheriff’s officials have identified the deputy as Sroeuy Khin.

Khin would have turned 51 on Saturday. He leaves behind his wife and four children.

The 10-year veteran of the force was on his way home from working overtime.

The bus driver indicated that the sun was in his eyes when he ran into the back of the Volkswagen, which had come to a stop on the roadway, said CHP spokesman Officer Derek Reed.

Investigators are still trying to determine why the car was stopped.

Tesla statement:

“We are aware of an accident this morning involving an independently-operated shuttle carrying Tesla employees and another vehicle. All Tesla employees on the bus are safe and accounted for, however we are deeply saddened by reports that there was a fatality as a result of the accident. We will lend any support that we can to the authorities who are investigating the incident.”

Details on the accident are still being investigated at this time.

The official Twitter account of the Alameda County Sheriff’s Department posted a photo of Khin this afternoon along with a brief message.”In Memory of Deputy Sheriff

“In Memory of Deputy Sheriff Sroeuy Khin who died today in a tragic vehicle accident,” the Twitter message says. “Our thoughts and prayers to his family and friends.”

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