A man wearing just his underpants and high on drugs managed to board an empty German government jet used by Chancellor Angela Merkel.

Clutching a bag full of marijuana and ecstasy pills, the 24-year-old danced on the wing of the plane, sprayed foam around and pushed buttons in the cockpit of the jet in Cologne Airport.

The bodybuilder, believed to be of Turkish descent and named only as Volkan T, even released the inflatable emergency slide of the Airbus 319 on July 25.

It took four hours for officials to remove the intruder from the plane.

According to reports, the plane’s emergency exits were accessible and the cockpit door was open.

It was also carrying up to eight tons of fuel.

Cologne state prosecutor Ulrich Bremer ruled out terrorism as a motive.

At least 100,000 euros of damage was caused to the plane which needed a new carpet, new coat of paint on its wing and a new emergency slide.

The jet is also used by other top state officials including President Joachim Gauck.