A shooting Wednesday afternoon involving Hawthorne police left a man and a woman dead and wounded a 12-year-old boy, authorities said.
Around 12:40 p.m., a woman driving a Mercedes in the 14200 block of Kornblum Avenue stopped her car next to a Hawthorne police officer sitting in his parked patrol car, according to the Los Angeles County sheriff's department.
The woman reported that another car was following her, and the officer asked her to park her car near his, officials said.
Moments later, a white Cadillac pulled up, and after getting out of the car, a man opened fire at the woman's car, officials said.
The Hawthorne police officer -- the lone policeman at the scene -- began shooting at the gunman, who was later pronounced dead.
The woman also died at the scene. The 12-year-old boy inside the woman's car was transported to the hospital and is in stable condition, sheriff's officials said.
It's unclear what prompted the shooting. The driver and a rear passenger of the gunman's Cadillac were detained for questioning by sheriff's homicide detectives.
The officer, whose name was not released, was not injured.