Published: Jun 08, 2013 3:35 PM EDT
Updated: Jun 08, 2013 4:32 PM EDT

Update:

SANTA MONICA, Calif. (AP) - Santa Monica's police chief says the gunman who killed four people in a chaotic rampage planned the attack and had 1,300 rounds of ammunition.
    
Chief Jacqueline Seabrooks says the gunman who was killed by police had a rifle, a duffel bag full of ammunition magazines and extra weaponry.
    
She says the suspect had a run-in with police seven years ago, but she couldn't comment further because he was a juvenile at the time.
    
She spoke near a display of weapons and ammo recovered from Santa Monica College where the killings ended when police fatally shot the gunman.
    
Seabrooks says police are probing the gunman's connection to a house where the killings began a mile from campus. She would not identify the killer but said he would have turned 24 on Saturday.

(Copyright 2013 The Associated Press. All rights reserved

 

Earlier:

SANTA MONICA, Calif. (AP) - Investigators are looking into family connections to determine what led a man to kill his brother and father before going on a shooting rampage across Santa Monica.
    
An official briefed on the matter told The Associated Press on Saturday that police are trying to piece together what started as a domestic violence incident and ended up at a college campus with five dead, including the gunman.
    
The official was not authorized to speak publicly and requested anonymity.
    
The killing began at a Santa Monica house where neighbors say a man lived with one of his two sons. The house was set ablaze and two bodies were found inside.
    
SWAT teams later searched the Los Angeles apartment of the man's ex-wife and questioned neighbors about the son who lived with her.

(Copyright 2013 The Associated Press. All rights reserved.