Police arrested the teenage suspect Thursday on suspicion of murder and attempted robbery for the Dec. 14 fatal shooting. The teen's name is not being released because he is a juvenile, police said.
The shooting, which killed 16-year-old Clifton Chatman, occurred at about 11 p.m. during an attempted robbery in the 500 block of Alemany Boulevard near southbound Interstate Highway 280, according to police.
The robbery victim told police he was surrounded by a group of males.
One suspect demanded the victim's cellphone and one took out a handgun while others rifled through the victim's belongings, police said.
The victim was complying with demands but the armed suspect shot him. However, the shot glanced off the victim's face and struck one of the shooter's alleged accomplices instead, killing him, according to police.
The suspects fled and when officers arrived on the scene, they found the wounded robbery victim and the deceased robbery suspect, police said.
The victim was taken to a hospital and survived his injuries, police said.
The deceased suspect was later identified as Chatman, a San Francisco resident.
The homicide remains under investigation.
Anyone with information about the shooting is asked to call the Police Department's homicide detail at (415) 553-1145. Callers can also use an anonymous tip line at (415) 575-4444 or send a tip by text message to TIP411 with "SFPD" in the message.