Greek police say at least six people have been hospitalised and 10 detained after rival fans from Serbia and Croatia clashed -- using chains, baseball bats and brass knuckles -- at Athens International Airport.
The clashes occurred on Thursday following a Champions League match between Olympiakos and Croatian club Dinamo Zagreb, despite an agreement between the two clubs to sell no away tickets.
The Serbian fans had travelled to Athens to support Greek side Olympiakos and took part in the clashes, most dressed in black and wearing hoods.
Olympiakos won the Group F game 2-1.