Bayern Munich fans attacked in Athens at Olympiakos vs Bayern U19 match

Olympiakos hosted Bayern Munich in the Champions League on Tuesday night

Greek police say six visiting Bayern Munich fans have been injured during an attack by suspected Olympiakos supporters ahead of the Champions League match between the two clubs on Tuesday night.

Police said about 80 men, many in motorcycle helmets or armed with clubs, invaded a training ground in Athens where the Olympiakos and Bayern U19 sides were playing, and started battering German supporters in the stands.

No arrests were reported, and the extent of the six Bayern fans' injuries was not immediately known.

Police said about 1,600 German fans have travelled to Greece for the Group B match.

The Greek team issued a statement that said: "Olympiakos FC most emphatically decries this afternoon's invasion of hooligans into the Rentis Training Center.

"These intruders have nothing to do or no relation whatsoever with the Olympiakos family."