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the boy that i headbutted reported it to the police, the police went to my old house, and the new tenant advised me, so i went to the police station where i was arrested, i was interviewed and i told the complete truth, so admitted head butting him, blamed red-mist due to seeing him hit my freind in the face for absolutley no reason, it was totally out of character on my behalf.
Basically the guy in question was drinking cider on the sideline prior to the match, his face was already showing the effects of recent "fights" he had been in, and he threw the first punch, i reacted, he came off worse and then went to the police.