The FA have confirmed they are investigating reports of crowd disturbances at the Carling Cup tie between Barnsley and Manchester United at Oakwell. The FA are also liaising with both clubs and South Yorkshire Police to gather evidence relating to events at the ground.
Eight fans were arrested after trouble erupted around 8:30pm, according to South Yorkshire Police while catering staff were forced to barricade themselves into a store room as their kiosk was ransacked by United supporters.
Stewards also had food and bottles thrown at them during the game.
An FA spokesperson said: "There is no place for anti-social or violent behaviour in our game.
"Any culprit found to be involved in these disturbances and identified as such by either the police or clubs should be subject to a lengthy ban from attending football matches."
Barnsley are launching an investigation into the violence, accusing Manchester United fans of causing "substantial damage" at the stadium.
A Barnsley spokesman said: "The club is going to launch a full investigation as soon as possible after substantial damage was caused in the concourse of the north stand.
"A complaint has been made to the police and we will be taking a look at CCTV footage of the incident before we can comment further."
A Barnsley spokesman added: "Scene of crime officers are down here now going through the North Stand and we're proceeding with our own investigation as well.
"It's a hell of a mess down there. Doors have been kicked in, tills have been damaged and there's food and drink everywhere. It looks like a swamp in one of the bars."
