Officials say 22-year-old Andrew Valdez suffered from multiple gunshot wounds to his upper body and died at the scene.
Coroners took Valdez's body away from the apartment complex on Maples near Shields a little before 8 a.m.
Police say they don't know what the motive is, but the victim had a visible gang tattoo and was wearing gang colors.
The city's fourth homicide of the year happened right around the block from the first, which killed young mother Yanina Olivarez.