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Ajax's Champions League trip to AEK Athens descended into chaos after a petrol bomb exploded inside the stadium and visiting fans were embroiled in bloody clashes with police and Greek supporters.
The two sides met in a Group E match in Greece on Tuesday night - but the build up to the game was marred by violence in the stands.
Riot police were deployed to deal with the trouble as a fire raged inside Greece's Olympic stadium following a shocking explosion ahead of the early kick-off.