A short video has emerged on Twitter that appears to show a Millwall supporter punching a Tottenham fan following the FA Cup match between the two sides, which Spurs won 6-0.
The seven-second video appears to have been recorded after the match, with a man wearing a flat-cap assaulting two Tottenham supporters singing an anti-Millwall song.
The thug approaches the two men singing before punching one of them in the face, with enough force to knock the man to the ground.
The man who throws the punch then quickly re-joins the throng of Millwall supporters leaving the ground.
The Twitter user who posted