UEFA chief Michel Platini has accused "bandits and crooks" of hiking hotel prices in Ukraine to sky-high levels ahead of the Euro 2012 football championships.
Ukraine is hosting the championships jointly with Poland in June.
Platini said some hotels were increasing prices tenfold and in some cases, hotels were not respecting already agreed prices for accommodation.
He was speaking in the city of Lviv, one of the Euro 2012 venues.
Ukrainian Deputy Prime Minister Borys Kolesnikov, speaking alongside Platini, promised to take action "within the next 30 days" to solve the problem.
Platini later jointly opened with President Viktor Yanukovych a new airport terminal in Lviv.
Based on reporting by AFP and BBC