In pictures: Manchester United fan protest and Old Trafford pitch invasion forces Liverpool game postponement

Manchester United fans hold banners referencing the infamous Old Trafford roof leak of 2019, which has become a symbol of decay for some who are protesting against the owners.

Green and gold-cloured flares were let off alongside red ones. The colours are synonymous with the anti-Glazer protests.

Flares and sprinklers were let off when fans made their way onto the Old Trafford pitch, in front of the Sir Alex Ferguson Stand.

One fan held a poster declaring the superiority of a Manchester United legend over the Tampa Bay Buccaneers - the NFL team also owned by the Glazers.

There were some tense stand-offs between those protesting and the police who were trying to move them away from the stadium.

The famous United Trinity statue, featuring Red Devils legends George Best, Bobby Charlton and Denis Law can be seen in the distance through a fog of green and gold.

A number of fans found their way into the stadium, despite a police presence.

Roy Keane said on Sky Sports News: “It has reached a tipping point for the Manchester United fans. They have had enough."

The frustrations of the Man Utd fans protesting The Glazers were also felt on social media, where they let their thoughts be heard.

"This is what you call a protest," one Tweet read.

The fan-led protests events from Sunday led the Premier League to release a statement that promises a plan for an 'Owner's Charter', with a small faction of supporters to be investigated by the Premier League and FA: "Opposition to the proposed Super League united the whole of football, with the fans' voice clearly heard. The Premier League recognises the strength of feeling and the right of fans to know what is happening.

"We are committed to maintaining close dialogue with supporters and their representatives, as we work with The FA and Government to identify solutions, but ask that all protests are peaceful. The actions of a minority of those present at Old Trafford on Sunday have no justification and will be investigated by the Premier League and The FA as well as by the Greater Manchester Police."