Two Wirral men face jail sentences for their parts in a large scale disturbance which led to a football game being postponed.
Protests against the ownership of Manchester United were held at Old Trafford prior to a fixture against Liverpool FC earlier this year.
More than 1,000 people attended, with clashes between police and protesters. Some broke into the ground and made their way onto the pitch.
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A police officer received facial injuries after being hit with a bottle during the protests, the MEN reports.
Now five men have pleaded guilty to violent disorder during a hearing at Manchester Crown Court.
Two of the men gave Wirral addresses when they appeared in court
Jake Collins, 24, Brian Doherty, 55, Henry Garside, 23, Peter McNally, 28, and Sam McNulty, 26, all admitted the offence.
Jake Collins, 24, Brian Doherty, 55, Henry Garside, 23, Peter McNally, 28, and Sam McNulty, 26, all plead guilty to violent disorder during a hearing at Manchester Crown Court.
McNulty, of Windermere Road, Prenton, Wirral, was also charged in relation to an injury suffered by a police officer.
He denied wounding with intent, but pleaded guilty to unlawful wounding. He is set to go on trial next year.
Garside also pleaded guilty to burglary, by entering Old Trafford stadium and stealing a corner flag and post worth £43.
Judge Darren Preston told Collins, of Barton Lane, Eccles; Doherty, of Douglas Walk, Whitefield; Garside, of Elaine Street, Warrington; and McNally, of Radnor Drive, Wallasey, Wirral, that they'd plead guilty to a 'serious offence.'
He said: "But I am not going to sentence you today.
"In each of your case the court will be helped by some background information by way or a pre-sentence report.
"Immediate custody will be at the forefront of the court's mind for this serious offence."
The judge told McNulty that his trial was scheduled for June. No further details of the case were disclosed during the plea hearing.
All five men were granted bail.
The protest was held ahead of a match between United and Liverpool on Sunday, May 2, which had been due to kick off at 4.30pm.
Protesters voiced their anger over the Glazer family's ownership of the club.
It also followed United's role in a failed attempt to form a breakaway European Super League in April.
The game was postponed on safety grounds following discussions between both clubs, the police, the Premier League and Trafford Council.
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