One of the women was an employee of the apartment complex, but victim identities are being withheld until next of kin is notified, Watt said.
Witness Arturo Ramirez, who works at the Golden West Towers, told the Los Angeles Times he locked himself in an office to call 911 after seeing a man who lived in the facility holding a gun.
Ramirez said he heard one of the women killed say, “Please, no! Please!” and then heard two gunshots. A final gunshot came a few minutes later.
Police are still investigating the man’s motive, but residents and staff from the senior center told NBC4 that the man had been behaving erratically, and many of them were seeking to have him kicked out of the complex.
“People knew that he was a little bit off,” Golden Tower employee Alex Galindo told the TV station. “People were warned, but nobody did anything, so I know there’s going to be blood on a lot of people’s hands. That’s all I can say at this point.”
A handgun was recovered at the scene.
Watt said the building’s management had received complaints about the alleged shooter but police were never alerted.
Police were trying to obtain surveillance camera recordings of the shooting, he said.