The San Diego police chief said at a news conference Sunday night that police received reports of a man shooting people by the swimming pool.
Police Chief Shelley Zimmerman says a department helicopter arrived first and saw the suspect still in the pool area and said he appeared to be reloading.
Three officers shot the suspect after he pointed the gun at them.
Zimmerman said four black women, two black men, and one Hispanic man were taken to hospitals with gunshot wounds. One of the women later died.
Zimmerman said the suspect was identified as Peter Selis.