San Diego Police Chief Shelley Zimmerman speaks to reporters outside the La Jolla Crossroads apartment complex following the shooting rampage by gunman Peter Selis. Photo by Chris Jennewein

A search warrant affidavit by a San Diego police homicide detective reveals that the gunman who shot seven people at a University City apartment complex had syringes and gun accessories inside his apartment, the Los Angeles Times is reporting.

The document also disclosed that a family member of the gunman hurried to the crime scene before knowing details.

Peter Selis. Screen shot

The search warrant affidavit by SDPD Det. David Spitzer “revealed that a sister of gunman Peter Selis rushed to the apartment complex on April 30, fearing that he might be involved. Eve Selis told officers that her brother lived there and was ‘extremely distraught and depressed’ over a recent break-up with his girlfriend,” the Times reported.

Selis, a 49-year-old auto mechanic, fired a large-caliber handgun into a crowd attending a birthday party in a pool area at the La Jolla Crossroads complex in the 9000 block of Judicial Drive just after 6 p.m. before he was killed in an exchange of gunfire with San Diego police.

“According to the affidavit, Selis drank from a beer bottle, then pulled a pistol from the bag. He started shooting and, after firing two rounds, called his ex-girlfriend and told her what he was doing and that police were coming,” the Times reported.

One of his victims, Monique Clark, a 35-year-old mother of three, died in the attack. The search warrant affidavit said she was shot once in the chest, the Times reported.

The warrant for a full search of Selis’ apartment was obtained May 1, and items seized included a full gun magazine, a gun-cleaning kit, a gun box and lock, a gun holster, gloves, syringes and pills, the Times report continued.

Selis, who worked at a Ford dealership, was reportedly deeply in debt and had filed for bankruptcy in 2015.