Three San Francisco collisions leave one dead, three injured

One person died and three people suffered injuries after three separate traffic collisions in San Francisco, police said Thursday.

The first happened at about 1:20 p.m. Wednesday near the corner of 18th and Church streets, police said.

Two vehicles collided and both drivers were taken to the hospital. One of the drivers, an 82-year-old man, succumbed to his injuries. The San Francisco Medical Examiner’s Office is working to identify him.

The second driver suffered non-life-threatening injuries, police said.

About two hours later, at about 3:30 p.m., officers responded to a second collision near the corner of Fillmore Street and Golden Gate Avenue.

Police said an 82-year-old woman was in the roadway when a motorcycle struck her. The woman was taken to a hospital with life-threatening injuries.

The motorcyclist was not arrested, and investigators have determined the motorcyclist was traveling through the intersection on a green light, according to police.

Officers responded to a third traffic wreck at about 2:20 a.m. Thursday morning near the corner of Lombard and Webster streets.

The solo vehicle crash sent a woman to the hospital with life-threatening injuries. Police have released few details about the crash. The cause is under investigation.