Homicide detectives responded to the area of Avenue Q-6 and Lilacview Avenue around 1:30 a.m. and found four shooting victims.
Detectives learned that the victims were inside a garage when an unknown number of suspects walked up to them. Authorities say a confrontation ensued, and the suspects opened fire before getting into a car and fleeing the scene.
All four victims were transported to a local hospital where one of them was pronounced dead. He has been identified as Dean Joseph Klein, 32, of Palmdale.
The three other victims -- a 21-year-old man, 30-year-old man and 27-year-old woman -- were treated for gunshot wounds and released.
Investigators have determined that the shooting was gang-related.
Anyone with information about this case was asked to contact the Los Angeles County Sheriff's Department's Homicide Bureau at (323) 890-5500.