Updated

Philadelphia police are hunting for the killer or killers of a 27-year-old man murdered Friday when he responded to a Craigslist ad, WTXK Fox 29 reported.

According to the station, police are questioning witnesses and persons of interest after a Williamstown, N.J., man was shot in the face after answering an ad listing an all-terrain vehicle for sale. Two witnesses who stayed behind in the victim's car reportedly told police the man was told to walk down the street to check out the ATV.

Seconds later, Fox 29 reported, one woman said she heard "Boom! Boom! Boom!" Geraldine Jones said she heard someone yell, "They shot Danny!" Jones said another person then called the police.

Homicide detectives, who believe the ATV ad was a set up, are combing through surveillance video taken from a nearby grocery store, and are particularly interested in footage showing two people walking down the block where the victim went to see the four-wheeler.

Click for the story from MyFoxPhilly.com