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A car collision on 21st Street and South Van Ness Avenue at about 8 a.m. on Tuesday killed two people and left one in life-threatening condition at San Francisco General Hospital, said Carlos Manfredi, the San Francisco Police Department’s officer for media relations.

Police responded to a call of a shooting from a black four-door vehicle near Valencia Gardens at about 7:45 a.m. The officers saw the vehicle a few blocks away and attempted a traffic stop.

The black vehicle drove away at a high speed as an officer was approaching the vehicle on foot, according to Manfredi. There was no pursuit.

A few blocks away, as it was heading northbound on South Van Ness, the suspect’s vehicle hit a car that in turn hit the northeast corner of a convenience store on 21st Street and South Van Ness Avenue. A pedestrian who was walking into the store was struck by the vehicle that had been hit and was pronounced dead on the scene, said Manfredi.

The passenger in the victim’s vehicle was also pronounced dead on the scene. The driver was taken to San Francisco General with life-threatening injuries.

Police recovered a handgun in the suspect’s car and took the driver into custody. He sustained injuries that were not life-threatening.

“This happened fairly quickly, within seconds,” said Manfredi.

This story will be updated as more information becomes available.