A man suffered life-threatening injuries when he was stabbed on San Francisco's Market Street late Tuesday night by a group of men believed to be members of the Hells Angels motorcycle gang, a police spokesman said.
The stabbing was reported at about 11:50 p.m. Tuesday near Market and Taylor streets, police said.
Two men, ages 35 and 39, were approached by a group of about 10 men who were wearing Hells Angels jackets, police said.
One of the suspects asked the 35-year-old victim if he was a member of the Mongols, a rival motorcycle gang, police Officer Albie Esparza said.
The victims ran away and were chased by the suspects, who caught up with them and stabbed the 35-year-old man several times, police said.
The man suffered stab wounds to the back of his head and neck and a laceration to his lip. He was taken to San Francisco General Hospital to be treated for his injuries, which are considered life threatening, Esparza said.
The other victim was not injured in the attack.
The suspects fled the scene on their motorcycles and had not been found as of this morning, police said.