Four men were arrested after a robbery and assault near Alamo Square on Wednesday night, police Officer Albie Esparza said.
A 44-year-old man in the 800 block of Scott Street had his camera taken from him about 6:21 p.m. by a man who appeared to be in his 20s, Esparza said.
A 53-year-old man at the scene tried to stop the theft and was struck in the back of the head and fell down as he gave chase after the suspect and cut his finger, Esparza said.
The suspect fled to a black 2013 Chevy SUV, which sped from scene and was later discovered by police at McAllister and Leavenworth streets in the Tenderloin, Esparza said.
Four men were taken into custody: Demaryia Stevens, 20; Jacori Bender, 23; Danny Luckett, 22; and Dishan Lowe, 19.
All of the suspects are San Francisco residents and were booked on charges of robbery, assault with a deadly weapon, conspiracy, possession of stolen property and being in possession of a stolen weapon, Esparza said.
The man who sustained the injury to his finger also complained of pain to his neck but refused treatment at the scene, Esparza said.