A UPS driver opened fire with a handgun inside a United Parcel Service delivery center in San Francisco on Wednesday, killing three co-workers before fatally shooting himself as police closed in, authorities and company officials said.
Joseph Cilia, an official with a Teamsters Union local that represents UPS workers in San Francisco, told the Associated Press that Lam filed an overtime grievance in March complaining he was working excessive overtime.
The San Francisco Medical Examiner identified the victims as Wayne Chan, 56, and Benson Louie, 50, of San Francisco, and Michael Lefiti, 46, of Hercules.
At least two people are dead after a shooting at a UPS facility in San Francisco on Wednesday morning, San Francisco Deputy Police Chief Mikail Ali said.
As investigators worked to determine a motive, friends and colleagues recounted personal and professional troubles that Lam had experienced, including a number of driving violations.
A San Francisco police department official has identified the gunman who opened fire at a UPS warehouse in the city as Jimmy Lam.
San Francisco police confirm a shooting at a sprawling UPS warehouse and customer service center, but no information on injuries has been released. No officer fired a shot during the confrontation, Chaplin said.
UPS employees paid respects to the victims at a memorial erected at the packing facility where the shooting had occurred a day earlier. Two guns were recovered at the scene, he said.
Neighbors said they'd seen him around in his uniform, but he usually kept to himself, sometimes smoking out his duplex window.
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Police ordered residents and employees in the city's Portero Hill neighbourhood and surrounding areas to shelter in place as they responded to the shooting.
After the shooting, UPS said the company wasn't immediately sure of the status of the survivors who were taken to the hospital. Some of the shot victims were found outside the facility and some were inside, he said.
Chaplin stated that when the police arrived on the scene, they were told that the suspect was still somewhere inside the building.
"They were banging on the bus and they were screaming, 'Go! Go!" He said, "I was sick to my stomach, seeing those bodies". Two other UPS employees were wounded, but have been released from the hospital, Cilia said.
"It could have been worse", he said.
After the gunfire, auto shop owner Robert Kim said he saw "a mob of UPS drivers" running down the street screaming "shooter, shooter".
"The facility is an area package sorting hub and package delivery center".
"Someone came up and just started shooting", she said her husband told her over the phone.
A woman named Michelle, who did not want to provide her last name, was walking to work across the street from a UPS facility when she saw several UPS employees running down the street.


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