A pedestrian was seriously injured Thursday morning, after he was struck by a driver near San Francisco's Cow Palace.

According to the San Francisco Police Department, the collision occurred at 10 a.m. Thursday, on the 200 block of Santos Street.

Police say that the 36-year-old driver of a car described only as a "sedan," "lost control of his vehicle" and struck a 50-year-old male pedestrian.

The pedestrian, police say, "was then pinned between two vehicles" as a result of the collision, and suffered "serious injury."

A tweet from the San Francisco Fire Department confirms that report, saying that by 10:32, the victim had been transported to the trauma center at San Francisco General Hospital with injuries considered life threatening.

The driver, police say, remained at the scene. No details on if he has been cited was provided by publication time, but police say that he was not arrested at the time of the collision.