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Twenty West Ham United fans have been arrested and another six injured during clashes with rival fans and police in Palermo.

Hundreds of people were involved in the violence ahead of the Uefa Cup match between the Hammers and Palermo on Thursday.

Trouble flared at about midnight in the city’s Teatro Massimo with rival groups of supporters hurling missiles at each other.

Riot police battled with supporters for more than an hour before eventually putting West Ham fans on three buses.

A police spokesman said: “We had been alerted already ahead of the match and now we will be increasing security.

“Bottles, cans, glasses and chairs were thrown by both groups – it was a huge battle which took more than an hour to control.

“We would appeal for both sets of fans to keep calm and not react to provocation from opposition fans.”

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