Police say they have arrested the man they believe slapped a woman on a Muni bus Monday night and then stabbed a man who tried to intervene.
Kyle Clark, 18, of San Francisco, is suspected of piercing the 35-year-old man multiple times with an “unknown sharp object” near the back of the 29-Sunset bus before 8 p.m., police said.
Footage from video surveillance cameras that were on the bus, among other leads, helped cops catch the suspect, sources said.
Police caught up to Clark near the intersection of Seventh and Brannan streets around 6:30 p.m. Tuesday after learning that he might frequent the area, police Officer Albie Esparza said.
“He was simply spotted on the street,” he said.
The suspect slapped the woman during an argument, police said. It was not immediately clear if the woman was his girlfriend, Esparza said.
The victim, who had been sitting across from the arguing passengers, was “punched in the head and body” by the bruiser after trying to help out, police said.
The assailant hopped off the bus with the woman and another man at Winston and Lake Merced, police said. The victim exited at a subsequent stop, and soon realized he’d been stabbed in his shoulder and waist, police said. He asked passersby to call 911, Esparza said.
According to reports, the bus driver was unaware of the stabbing before the assailant hopped off the bus.
The stab wounds were minor, police said. The victim was treated and released at San Francisco General Hospital, they said.
That the arrest was made with the help of Muni surveillance cameras is good news for the transit agency, which was criticized last year for having inoperable cameras during high-profile incidents.
The 5,500-odd cameras on buses, streetcars and in stations are in working order, Muni spokesman Paul Rose told The Examiner on Tuesday.
“We monitor them every day to make sure they are operating properly,” Rose said.