F-Market, 10-Townsend Crash on Market St.
Photo by Flickr user b00nj
Update (8:25 p.m.): MTA says that the operators of the Muni vehicles were also taken to hospitals.
Update (7:10 p.m.): MTA reports that five people were taken to the hospital with non-life-threatening injuries, and 10 were treated at the scene of the accident.
Update (6:26 p.m.): The Examiner reports that 13 were injured, and that an automobile was also involved.
Original post: SF Appeal has the story; unknown injured. MTA reports injuries, but number and nature are unknown as of yet. We’ll update this post when we get more info.