San Francisco UPS Shooting: 4 Dead, 2 Injured As Employee Opens Fire, Police Say

SAN FRANCISCO, CA — A disgruntled employee shot five coworkers at a UPS facility in San Francisco Wednesday morning and then turned the gun on himself, according to an SFPD spokesman. The gunman and three others died, while two were wounded.

The gunman has been identified as Jimmy Lam of San Francisco, a UPS driver.

Assistant Police Chief Toney Chaplin says Lam was armed with an assault pistol.

Chaplin says an exact motive in unknown at this time. He asks the public to contact police if they have any information that would advance their investigation.

CSI units are inside the building right now reconstructing events.

Chaplin said that when responding officers got to they scene, they found two victims outside. They tried to revive the victims, but it was too late. Inside the building, officers moved the shooting victims to safety for medical treatment, then encountered the suspect dressed in a brown UPS uniform. The suspect put a gun to his head and shot himself.

WATCH: Raw Footage Of Police Response To Shooting

The victims were taken to Zuckerberg San Francisco General Hospital, a Level I trauma center, which is nearby. Police have only released the identity of the gunman.

These employees on the roof were rescued by police pic.twitter.com/3C1NTcAr8o
— Kevin Wood (@megakwood) June 14, 2017

The UPS facility, located at 320 San Bruno Ave., serves as a sorting hub and package delivery center with 350 employees.

"The company is saddened and deeply concerned about affected employees, family members and the community we share," UPS said in a statement. "Our thoughts and prayers are with all those touched by this incident."

The mayor of San Francisco, Ed Lee, also issued a statement following the deadly shooting Wednesday, sending his "condolences and thoughts for the individuals and families affected by the senseless act of violence."

"We all know the familiar faces of our local UPS drivers and delivery persons," Lee said. "Today's tragedy will be felt in every community served by these committed employees."

Sen. Dianne Feinstein (D-Calif.), who became San Francisco mayor following the City Hall assassinations of Mayor George Moscone and Supervisor Harvey Milk, said in a statement, “I was heartbroken to learn that yet another senseless act of gun violence has marred our wonderful City. My heart goes out to the victims and their families, and to everyone affected by this despicable act."

PHOTO CREDIT: Photos by Justin Sullivan/Getty Images