San Diego (CNN)Despondent over the end of a relationship, a gunman entered the pool area of his San Diego apartment complex Sunday and began shooting indiscriminately at people gathered for a birthday party, authorities said.
At some point during the shooting 49-year-old Peter Selis took a seat in a lounge chair, pulled out his cell phone and called his ex-girlfriend to tell her he shot two people, San Diego Police Chief Shelley Zimmerman said in a news conference Tuesday.
He kept her on the phone as he continued shooting, killing one woman and injuring six more before police shot and killed him, Zimmerman said.
Though Selis was white and the victims were black and Hispanic, Zimmerman said there was "zero information" to suggest the rampage was racially motivated. Another person was injured in the incident, breaking his arm while fleeing the gunfire.
"The victims were targeted for no reason other than their mere presence," Zimmerman said.
"What started as a celebration of a friend's birthday turned into a tragedy of epic proportions for all those in attendance."