AFP
Manchester United's Premier League clash against Liverpool was postponed on Sunday after fans invaded the Old Trafford pitch as part of a protest against United's owners, the Glazer family.
Hundreds of fans managed to make their way into the ground, chanting "we want Glazers out."
Large numbers of supporters had also gathered outside the stadium and there were clashes with police as they moved in to disperse the crowd.
"Following discussion between the police, the Premier League, Trafford Council and the clubs, our match against Liverpool has been postponed due to safety and security considerations around the protest today," United said in a statement.
"Our fans are passionate about Manchester United and we completely acknowledge the right to free expression and peaceful protest.
"However, we regret the disruption to the team and actions which put other fans, staff and the police in danger. We thank the police for their support and will assist them in any subsequent investigations."
The match had been due to start at 1630 local time (1530GMT), but had been delayed by over an hour before the decision to call the match off was confirmed.
"The security and safety of everyone at Old Trafford remains of paramount importance," the Premier League said in a statement.
Supporters protest against Manchester United's owners, inside English Premier League club Manchester United's Old Trafford stadium in Manchester, north west England on Sunday, ahead of their English Premier League fixture against Liverpool.
