Barcelona have complained to UEFA about delays and poor facilities provided by German authorities in Berlin for fans flying back to Spain in the early hours of Sunday morning.
Barca supporters celebrating their side's 3-1 win over Juventus in the Champions League final were left angry by their treatment at the Berlin Exhibition Centre, a normally unused terminal at Schoenefeld airport, which was assigned by UEFA for the arrival and departure of charter flights.
The Spanish club have complained that "minimum services expected at an airport" were not provided and that disabled people were particularly affected.
Barca released a statement on Sunday that read: "Barcelona have filed a formal complaint to UEFA claiming that the Berlin authorities have breached conditions set out for members and club fans leaving the German capital this morning."
More than 5,000 fans were leaving from the terminal at Schoenefeld airport and the club complained that only four buses were provided to take them to their planes, causing long delays.
Barca also said the PA system in the terminal did not work and that food prices were "outrageous".