Liverpool fans vandalised Old Trafford football ground during their victorious FA Cup semi final match against Chelsea on Sunday, it has emerged.
Workmen are trying to repair the damaged areas
Fans ripped out seats and scrawled graffiti praising the serial killer Harold Shipman inside the ground.
A spokesman for the Football Association confirmed it was talking to Greater Manchester Police and Manchester United about the incident.
Workmen are trying to repair affected areas before the next home game.
The FA have agreed to pay for the damage as they organised the event.
It is understood Manchester United tried to lobby the FA to urge them not to hold the match at 1715 BST, to avoid the threat of drunken trouble.
Manchester United declined to comment.