Three police officers were injured after clashes with Legia Warsaw fans ahead of their Europa Conference League defeat at Aston Villa on Thursday.
Missiles were thrown at police as the visiting fans were held in the coach park near Villa Park ahead of the game, which the hosts won 2-1.
The match did start on time but no Legia fans were allowed into the stadium ahead of kick-off. Legia accused Villa of reneging on their agreement regarding the away ticket allocation, but Villa said the decision was made over safety concerns.
"Aston Villa can confirm no away fans were allowed into Villa Park for this evening's Europa Conference League fixture with Legia Warsaw on the advice of West Midlands Police following large-scale disorder outside the stadium caused by visiting supporters," read Villa's statement.
"The UK safety authorities, UEFA and Aston Villa communicated on November 2 that the ticket allocation for away fans for this fixture would be reduced to 1,002 on the advice of safety authorities as a result of previous large-scale disorder caused by Legia fans last month at AZ Alkmaar.
