Los Angeles Police Officer Killed After Patrol Car Crashes into Big Rig Truck (VIDEO)

A Beverly Hills collision left one Los Angeles Police officer dead on Friday morning, according to local reports.

An LA cop who had worked on the force for nearly a decade was killed after his patrol car collided with a big rig hauling a load of garbage at about 8 in the morning.

According to representatives from the Beverly Hills Fire Department who spoke with KTLA, the crash happened at the intersection of Loma Vista Drive and Robert Lane.

There were at least two officers inside the police vehicle, which came from the LAPD's Hollywood Division, the Los Angeles Times reported. The passenger inside the patrol car and the person driving the big rig truck sustained critical injuries, and were immediately transferred to a nearby medical facility.

Police Chief Charlie Beck said the officers were on the clock at the time.

"The officers were responding to a call of unknown trouble," Police Chief Charlie Beck stated during a press conference organized shortly after the collision.

During the media conference, the LAPD chief spoke with Mayor Eric Garcetti, along with other LAPD officers.

"On behalf of this city, we grieve a hero this morning," KTLA reported Garcetti as saying. "Any police officer in this city and in this county, every single time they suit up, it could be the last day. And today it was."

The male officer, whose identity has not yet been released, died at the scene of the collision. The unnamed female officer, who had just joined the LAPD roughly three months prior, and the truck driver are expected to live.

Investigators are still unsure what caused the fatal crash.