A man who died following an attack in Greater Manchester on Monday night has been named by police.
A stretch of the Rochdale Canal has been searched
Mugilan Sutherman, 43, was assaulted in Failsworth, Oldham, after apparently refusing to give a group of teenagers a light for a cigarette.
He was found collapsed on Oldham Road and was taken to The Royal Oldham Hospital where he later died.
Two boys, aged 18 and 15, and two girls, aged 14 and 15, have been arrested on suspicion of murder.
Mr Sutherman, from Rochdale, had four children, three of whom are of school age.
Oldham Road was closed on Tuesday morning at its junction with Old Lane whilst forensic examinations were carried out, Greater Manchester Police said.
A section of the Rochdale Canal was drained on Tuesday afternoon as forensic specialists searched for clues.
Detectives said police patrols in the area will be stepped up after the attack, which happened at about midnight.