( CNN) The Philadelphia Police Department has identified four minors they suppose were involved in an assault on a 39 -year-old man with mental disabilities. The assault was videotaped by one of children and juveniles and was detected on social media on Monday, according to police.

According to police, a 12 -year-old boy punched the man in the face for no apparent reason. A 15 -year-old then punched the man as he was moving away from the first attacker.