Four Real Betis supporters arrested following disorder at Old Trafford
Officers have described behaviour last night as "totally unacceptable"
Greater Manchester Police are working with the Spanish authorities, Manchester United and Real Betis following crowd trouble at Old Trafford last night.
Around 3,600 visiting fans attended the Man Utd v Real Betis fixture on Thursday 9 March, with GMP saying the "vast majority of supporters were very respectful and well behaved in the lead up to and during the game".
But the force said, throughout the fixture, a number of flares and pyrotechnics were used inside the stadium by Real Betis supporters and objects thrown across the supporter segregation lines, during which a Police Officer was injured as a result of a pyrotechnic being thrown by a person in the away section.
There was also disorder towards the club's stewards, officers and home fans caused by a small group of around 50 Real Betis supporters, police added.
Extra police officers had to be deployed to the ground "to bring the incident under control".
Four Real Betis supporters were arrested for violent disorder, assault, possession of flare inside the stadium and possession of controlled drug. Two of them currently remain in police custody for questioning.
Chief Inspector Jamie Collins, said: “The violent disorder experienced does not reflect the majority of supporters attending this fixture who went just to watch the football on the pitch.
“Last night’s behaviour by the minority was totally unacceptable and quite shocking for the decent supporters who may have got caught up in this.
“We are also continuing to offer the welfare needed to support one of our colleagues who was injured when trying to keep the public safe.
“GMP are working closely with Manchester United, the UK Football Policing Unit, Real Betis, UEFA and Spanish Police colleagues to identify those involved in a post-match investigation which is ongoing.
"If any supporters from Manchester United or Real Betis and those attending the game have information or footage that can assist with enquiries, they are asked to contact Greater Manchester Police on 101 as soon as possible so we can bring those responsible to justice and also to seek, where possible, football banning orders."