A 12-year-old boy was among five children arrested after a man was beaten with "metal bars" in a Manchester street, police have said.
The 29-year-old victim is in a critical condition after being found unconscious in Chinley Avenue, Moston, at 21:00 BST on Saturday.
Five boys, aged 12 to 17, and a man, 32, have been arrested on suspicion of assault. All six remain in custody.
Police said the victim suffered a head wound.
The arrested teenagers include two 14-year-olds, a boy of 15 and a 17-year-old.
Det Ch Insp Andrew Cunliffe of Greater Manchester Police said: "This is a serious attack which has left a man with potentially fatal or life-changing injuries."