An pedestrian was seriously injured Tuesday night, after a driver struck him as he used an Outer Richmond crosswalk.

According to the San Francisco Police Department, it was 9 p.m. Tuesday when a 66-year-old man crossed the street at 25th Avenue and Anza Street.

At that same time, a 35-year-old driver turned left from southbound 25th onto eastbound Anza, police say. The driver struck the pedestrian, leaving him with life-threatening injuries.

That intersection is governed by a four-way traffic signal. As of Wednesday morning, police were unable to confirm which party had the green light — but as in many cases of pedestrians struck by left-turning motorists, it's possible that they both did.

The victim was transported to San Francisco General Hospital for treatment of his injuries. The driver remained at the scene, police say, and was not arrested.