Around 9:30 p.m. Wednesday, authorities began chasing a silver Jeep that did not have license plates. But the vehicle quickly crashed into a pole at McKinley Avenue and Century Boulevard.
The male passenger fled from the vehicle a few blocks before the crash, authorities said, and he then shot himself in the head. Authorities said he died at the scene.
Authorities took the female driver, who had remained in the vehicle, into custody.
Investigators believe the vehicle was stolen.
The investigation was ongoing.