SAN FRANCISCO -- Three suspects sought by San Francisco police for the beating death of a disabled, homeless man are seen in surveillance footage released Tuesday by officials.
Police have been searching for the killers who beat and kicked Tai Lam in two separate flurries on Nov. 23 in the city's Financial District between 11 p.m. and midnight.
The 67-year-old victim's body was discovered, according to the San Francisco Examiner, the following morning around 7 a.m.
In one clip of footage culled from security cameras, three men are seen from a bird's eye view as they congregate on a staircase outside a small shopping mall and smoke a cigarette.
The other clip is vicious. It shows one of the suspects in a hooded sweatshirt delivering several swift kicks to Lam, who was 5-foot-5 and weighed fewer than 100 pounds.
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A short time later, the three men return to again pummel Lam in his sleeping bag. He didn't immediately die, according to SFGate.
Police have additional footage from the attack but said Tuesday that it was very graphic.
"I have 25 years in, and this is a really awful attack, probably one of the worst I've ever seen," said Sergeant John Cagney, who is leading the police department's investigation of the killing.
The beating appeared unprovoked and police believe that Lam was asleep when the killers first struck.
Two suspects are believed to be African-American and one is Caucasian, cops said to KTVU. They could be anywhere in age from their late teens to early 30s.
Anyone with information is asked to contact Cagney at 415-734-3181 or by email at John.Cagney@SFGov.org.