A man was fatally struck by a vehicle in San Francisco's Bayview District on Friday morning, police said.

Officers responded at 6:19 a.m. to the collision reported by Bayshore Boulevard and Marin Street. Medics were already trying to save the pedestrian's life, but he succumbed to his injuries at the scene, San Francisco police spokeswoman Sgt. Kathryn Winters said.

The driver who struck the pedestrian stopped at the scene and cooperated with investigators, who do not believe impairment to be a factor in the case, Winters said.

The name of the man who died has not been released, but the pedestrian advocacy group Walk San Francisco said he was 53 years old.

“Our hearts go out to this man's loved ones and community,” Walk SF Executive Director Jodie Medeiros said in a written statement. “We grieve the lives lost so senselessly on our streets.”

The group said the location of the collision was on the city’s designated “high-injury network,” roughly 12% of San Francisco streets where more than two-thirds of its severe and fatal traffic crashes occur, and is part of what's known as the Hairball due to several bridges and ramps that connect to nearby U.S. Highway 101.

“It’s incredibly devastating that another life has been lost on our streets,” Medeiros said. “What’s extra painful is that once again, this happened at a known dangerous intersection near a freeway entrance that has yet to get the kind of comprehensive changes needed so drivers go slowly and cautiously.”

Walk SF has been busy recently, holding a rally Tuesday following the death of a 4-year-old girl who was struck by a car at Fourth and King streets on Aug. 15. A 71-year-old woman has been arrested on suspicion of vehicular manslaughter in the case.

There have been 12 pedestrian deaths in San Francisco in 2023, according to the group.