Players from Manchester United and Liverpool have clashed at half time in the tunnel at Old Trafford.
A report from Sky Sports News has claimed that Manchester United defender Patrice Evra tried to approach Liverpool striker Luiz Suarez following the Uruguayan's refusal to shake his hand before the match.
Liverpool defender Martin Skrtel is believed to have come between the two, which led to several players from both sides jumping in.
It took police and stewards around five minutes to calm the situation down.
