A female pedestrian was seriously injured Friday evening, when she was struck by a driver as she crossed a Mission District street.

According to the San Francisco Police Department, it was 7:31 p.m. when the 31-year-old woman crossed the 3300 block of Cesar Chavez Street, which is near South Van Ness Avenue.

She was "knocked to the ground" by a vehicle piloted by a 51-year-old male driver as she crossed, police say. Details on which party had the right of way and if the woman was in a crosswalk were not available as of publication time.

Police say that the woman was transported to San Francisco General Hospital with life-threatening head injuries as a result of the crash. According to the SFPD, no arrests were made on the scene, and no information was available on any possible citations for the driver in this incident.