SAN FRANCISCO -- Three people are dead and a gunman fatally shot himself in a shooting at a UPS facility, the San Francisco Police Department said Wednesday.
The shooting happened just before 9 a.m. at the facility on the border of the Mission District and Potrero Hill area, a largely residential neighborhood.
Police arrived to an active shooter scene. When the suspect, who was wearing a UPS uniform, was found, police officials said he pointed an assault weapon to his head and fired.
Police do not believe it is a terrorism-related shooting. The gunman has not been confirmed to be an employee of UPS.
Two other people were taken to a hospital with unknown injuries, police said.
All of the workers involved were preparing for a morning meeting before leaving with their parcels, UPS spokesman Steve Gaut said.
Aerial footage showed police leading dozens of people, many in matching brown work uniforms, out of the building. A tactical vehicle arrived shortly thereafter.
Police seem to be concentrated around the UPS San Francisco Customer Center, a couple of blocks east of Franklin Square.
Residents have been warned to avoid the area because of heavy law enforcement activity.