Deputies believe the shooting occurred near the 605 Freeway on Artesia Boulevard, just east of Studebaker Road, around 2 a.m., according to the Los Angeles County Sheriff's Department.
Investigators say the man in his 20s was inside a gold Toyota Corolla when he was shot in the upper torso. The three other people inside the car with him at the time were not injured, but were detained for questioning.
"The suspect shot at the victims in their vehicle.. and they ended up traveling eastbound on Artesia, made a U-Turn at some point and ended up in the property right behind me," said Lt. Hugo Reynaga, referring to the school campus.
Investigators say the victim was rushed to the hospital where he later died.
Deputies have released not released any information on the suspects or their vehicle.
DEVELOPING: We will add more details to this report as they become available.