A fourth person has been arrested over an alleged assault that took place after Norwich City's play-off semi-final against Leeds.
A man, in his 60s, was reportedly punched outside the ground on Carrow Road at about 14:00 BST on 12 May. An object was also thought to have been thrown, cutting the man's chin.
The arrested man, also aged in his 60s, was questioned on suspicion of affray and bailed until 13 August.
One of three men previously arrested has been charged with assaulting an emergency worker, common assault and possession of Class A drugs. He has been bailed and will attend Norwich Magistrates' Court on 7 June.