An amateur footballer from Oxford was arrested after assaulting an opposition team's supporter at an away game.
Headington Amateurs were playing against Hardwicke AFC in Gloucester on Saturday when the incident happened.
A Gloucestershire Constabulary spokesman said a 21-year-old man was arrested on suspicion of assault after he hit a spectator, causing a swollen nose and cheek and black eye.
Hellenic League general manager Brian King said he had received the referee's match report, which said that the player was escorted off the pitch 15 minutes into the second half.
The player was later given a caution by police, who refused to identify him.
Mr King said: "The first thing I will be doing is talking to the Oxfordshire FA about the report and then we will go through the due processes.
"How that will resolve itself, I'm not in a position to say."
Don Light, who is chairman of Headington Amateurs, based at Barton Village Road, in Barton, said: "I wasn't actually at the game, so I'm still making inquiries about what happened.
"We have got a training session on Wednesday night and I will want to get to the bottom of this.
"After that, we will see what disciplinary action needs to be taken."
Headington eventually lost the game 6-0.
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