The Football Association will investigate the crowd trouble which broke out during Tuesday's Carling Cup fourth round clash between Barnsley and Manchester United at Oakwell.
The FA are awaiting the report from a crowd control advisor, who was present at the game, as well as from referee Chris Foy after eight fans were arrested at the match.
It has been reported that eight catering staff were trapped inside a food kiosk and had to barricade themselves in a store room as fans broke in and stole cash from the till and food from the shelves.
Stewards on the pitch also had food thrown at them during United's 2-0 victory.
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."
Meanwhile, Barnsley are launching an investigation into the violence, accusing Manchester United fans of causing "substantial damage" to Oakwell.
A spokesman for the Tykes 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."