San Diego police released the following timeline of events in the deadly shooting at the La Jolla Crossroads apartment complex on Sunday, April 30.
Witnesses told NBC 7 the victims were celebrating a birthday party at the complex pool when the shooting began.
One woman died and seven people suffered gunshot wounds. Another person suffered a broken bone trying to escape the mass shooting.
A security guard was also fired at by Selis, but she got away without being shot.
The gunman has been identified as 49-year-old Peter Raymond Selis. Investigators said Selis was despondent over a recent breakup in a relationship in the days leading up to the shooting.
Selis enters the pool area dressed in street clothes and carrying a backpack, according to witness Demetrius Griffin. Selis sits in a chair and places the backpack on a nearby table.
Griffin's friend who was celebrating his birthday approaches Selis to invite him to join the party.
Seconds later, Selis removes a gun from under his shirt and fires twice into the man's chest, Griffin said.
Selis continues firing, striking a man in his leg, one woman in her arm and chest and another woman in her leg, the witness said.
Selis reloads his weapon, according to police. Then he shoots a man in his abdomen, a woman in the neck region and another in her shoulder, according to Griffin.
SDPD communications gets a call that two people are shot near the pool area.
A second caller says they heard five to seven gunshots and neighbors are yelling.
Officers are dispatched. SDFD is made aware of situation to send units
6:07 to 6:13 p.m.
SDPD dispatches 20 officers including the department's helicopter.
Additional callers report seeing at least 3 or 4 people in the pool area, suspect is a white male in his 40s.
More calls come in to communications center.
The SDPD helicopter ABLE and ground units arrive on scene
SDPD ABLE pilot sees the suspect is in the pool area and he has a weapon
ABLE directs ground units to where the suspect is located in the pool area
As officers approach the pool area, the suspect fires his weapon, according to SDPD Chief Shelley Zimmerman.
The suspect continues to fire his weapon and point his gun at officers, she said.
Three of the officers shoot toward the suspect striking him.
Suspect is pronounced deceased at the scene.