SF police release surveillance photo of suspect in violent Tenderloin attack caught on video

SAN FRANCISCO (KTVU) - San Francisco police released surveillance photos of a suspect they say is behind a violent attack in the Tenderloin, which a CEO caught on video and shared widely on social media.

The attack happened Tuesday on Mason Street. On the video, the suspect is seen punching a 38-year-old victim, knocking him to the ground. He then stomps on the man's head as the man is lying on the sidewalk. The suspect then takes off, walking northbound on Mason Street.

HVMN CEO Geoffrey Woo's employees took video of the attack, and Woo tweeted it earlier this week to grab the police's attention.

Anyone who recognizes the suspect is asked to contact police at their 24-hour anonymous tip line at (415) 575-4444 or to text TIP411 with "SFPD" in the beginning of the message. 

Tips can also be sent to SFPDtenderloinstation@sfgov.org.