Deutsche Lufthansa has accused Frankfurt Hahn Airport of allegedly granting indirect payments to Irish airline Ryanair.
Lufthansa is demanding that Ryanair return €2.7 million to Frankfurt Hahn, monies that the German carrier claims Ryanair received in reduced airport fees.
The German airline giant is also demanding information regarding money paid to Ryanair between 2002-2005 in the form of marketing support.
Lufthansa is now calling for no further state aid to be paid to Ryanair unless it has EU approval.