A 64-year-old man suffered life-threatening injuries after he was assaulted with a metal chain in the Tenderloin on Friday afternoon, said police.

The incident occurred as the victim was walking behind the suspect, a 38-year-old man, along the 200 block of Turk Street at 12:42pm on July 14th. The suspect suddenly turned around, swinging a metal chain and striking the victim.

The victim was critically injured and taken to a hospital. The suspect was arrested. 

If you have any information about this incident, contact police directly at (415) 575-4444, or text a tip to TIP411 with SFPD at the beginning of the message. All information will be kept anonymous.