A man was left with life-threatening injuries after a large group of people attacked him early Friday in San Francisco's South of Market area, according to police.
The attack occurred around 2:40 a.m. at Harrison and Harriet streets, according to police.
Witnesses told police that a group of 15 to 30 male and female suspects were seen kicking and punching the victim, a man in his early to mid 20s, and using glass bottles as weapons.
The victim was knocked unconscious and the suspects fled the scene on foot.
The victim was taken to the hospital with life-threatening injuries and police today described him as suffering from "deteriorating brain function."