LOS ANGELES (KABC) -- Officials are releasing more details in a South Los Angeles shooting that left two people dead, and a second shooting police believed may have been in retaliation.The first set of deadly bullets rang out near 81st Street and Avalon Boulevard at about 8:15 p.m. on Saturday.The shooting killed 20-year-old Shujaa Silver of Los Angeles and 16-year-old Cy'jai Bell, while injuring two others.Police said a vehicle pulled up, a passenger got out with an assault rifle and shot multiple times at a crowd as people tried to flee.Authorities said the suspect fled in an SUV heading north on Avalon Boulevard.Less than 48 hours later, a second shooting left a 17-year-old boy dead near 83rd Street and Avalon Avenue at 9 a.m. on Monday.Investigators said a man walked up to the teen and shot multiple times. The teen ran away and sought shelter in a nearby apartment where he died, according to officials.Police said they believe the two deadly shootings are gang related.If you have any information that can help officials in their investigation, you are urged to call Crime Stoppers at 1-800-222-8477. Tipsters can remain anonymous.