L.A. County Sheriff's detectives say the incident occurred on the 19700 block of South Enslow Drive at 10:35 p.m.
The suspect allegedly pulled out a gun and opened fire into the crowd, hitting a woman and a man. The female victim was taken to a local hospital, where she succumbed to her injuries.
The male victim was treated for non-life threatening injuries and released. The suspect was only described as a black male.
The investigation is ongoing. Anyone with information was urged to contact the Los Angeles County Sheriff's Department's Homicide Bureau at (323) 890-5500.
CNS contributed to this report.