Crowds filmed throwing chairs and bins outside coffee shop in Manchester city centre
Video footage showed crowds of supporters clashing on the streets of Manchester city centre on Saturday morning before the lunchtime kick-off.
Greater Manchester Police said no arrests had been made but officers are working to identify those involved.
A spokesperson for the force said: “There have been isolated incidents of disorder in the city ahead of this afternoon’s game at Old Trafford 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.
“Officers will remain in the city for the remainder of the day to ensure the public and the vast majority of law-abiding fans can enjoy their day safely and with minimal disruption in Manchester.”
In one video clip shared on Twitter, which appears to have been filmed from inside a coffee shop, someone can be heard saying “Good job we’re in here” as a large crowd runs through the street outside.
A member of staff appears to lock the doors to the premises as the men outside throw punches, chairs and bins at each other.
Two police officers armed with batons attempt to break up the crowd, which is quickly dispersed as a wailing siren draws near.
In another video, fans can also be seen brawling outside a pub before kick-off at Old Trafford.
Manchester United ended up thrashing Leeds United 5-1 in the Premier League’s early kick-off on Saturday.