The first collision was reported about 3:40 at Avalon Boulevard and Slauson Avenue, according to the Los Angeles Police Department. The unidentified pedestrian was pronounced dead at the scene.
The driver remained at the scene, and LAPD spokesperson said. No arrest or citation was immediately announced.
Two investigating officers were inside their patrol unit when they were struck by a vehicle. The officers were transported to a hospital with unknown injuries.
Whether the second driver was detained was unclear.
The investigation was ongoing.