Clashes broke out before Manchester United and Leeds United’s Premier League season opener, sparking a police investigation.
Video posted to social media appeared to show a group of supporters brawling, with a chair being thrown and someone using a bin as a weapon.
While police officers were seen in the footage, Greater Manchester Police said there were no arrests.
No arrests were made but work has begun with football intelligence officers from both clubs to identify any suspected offenders and hold them to account for their actions.
It's worth a reminder that successful prosecution can lead to a two-year football banning order.
In a tweet, GMP said: “There have been isolated incidents of disorder in the city ahead of this afternoon’s game at #OldTrafford and we have worked closely with licensed premises to ensure we could act swiftly to negate any incidents of concern and move people on safely.
“No arrests were made but work has begun with football intelligence officers from both clubs to identify any suspected offenders and hold them to account for their actions.
“It’s worth a reminder that successful prosecution can lead to a two-year football banning order.”
The game between the bitter rivals at Old Trafford kicked off at 12.30pm and was the clubs’ first meeting with fans in full attendance since Leeds were promoted back to the top flight in 2020.
The game finished 5-1 in Manchester United‘s favour.
During the game, Leeds fans could be heard chanting “you let your country down” as Jadon Sancho warmed up, following his penalty miss in England’s Euro 2020 final loss.
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This compares to Brentford fans yesterday, who applauded Arsenal player Bukayo Saka, who also missed in the shootout.
Both players suffered racist abuse on social media afterwards.