Drug-fuelled bodybuilder parties for hours on Merkel’s jet...in only his underpants

German police are investigating how a half-naked, drug-fuelled bodybuilder was able to party for hours on board an empty government jet used by German Chancellor Angela Merkel.

Wearing only underpants and high on drugs, he danced on a wing, sprayed foam around, and pushed cockpit buttons, causing €100,000 worth of damage.

The incident took place on July 25, when the 24-year-old man, clutching a bag full of ecstasy pills and marijuana, boarded the empty jet while it was parked at a closed military section of the Cologne airport.