A pitch invasion which led to a football steward being trampled by a police horse has been labelled "completely unacceptable" by police chiefs, who vowed to prosecute the troublemakers.
The behaviour towards officers and match stewards from some fans at last night's cup tie derby between Preston North End and Blackpool was criticised as "disgraceful".
Police said "a significant minority of determined people" from both sides were intent on causing trouble on the night and added that those identified would be tracked down and prosecuted.
Two people were arrested for criminal damage to one of the supporters' coaches outside the ground, with another four people held for minor offences.
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