It was revealed in footage secretly filmed from behind a curtain then sent by a whistleblower to international media. A FIS official said the illegal alterations were only subsequently confirmed by tearing apart the seams of the crotch area on the offending Norwegian ski suits.

Norway team officials were found to have illegally modified their ski suits to provide an aerodynamic advantage

The Norwegian Ski Federation has suspended two staff, including the team coach, after the governing body admitted that the country's ski jumping team cheated by manipulating jumpsuits at the Nordic World Ski Championships in Trondheim.