By ROD McGUIRK, the Associated Press

MELBOURNE, Australia (AP) — A passenger was arrested at an Australian airport after he left a stationary airliner through an emergency exit, walked along a wing, and then climbed down a jet engine to the tarmac on Thursday, officials said.

Jetstar Flight JQ507 had arrived at Melbourne Airport from Sydney and had parked at a terminal gate when the man left the plane by the right-side exit, officials said.

Opening the exit automatically deployed a slide from the back of the wing at the fuselage to the ground, a Jetstar statement said. But the man instead walked along the wing and climbed down one of the Airbus A320′s two engines, an official said.

Passenger Audrey Varghese said passengers screamed and shrieked as the man began “erratic” behavior shortly before he opened the hatch.

“As soon as the plane had started coming to a stop, he immediately got up and basically charged to where the emergency exit row is, and in the process shoving people, causing a bit of commotion, (and) ripped open the emergency door,” Varghese said.

Another passenger, identified as Maddison, told Nine News television the man had been vaping, which is not allowed, during the 90-minute mid-morning flight and had unsuccessfully demanded the air crew provide him with alcohol.

Australian Federal Police officers had been alerted by Jetstar staff and arrested the man for “alleged aggressive behavior and breaching aircraft safety protocols,” a police statement said.

He was assessed by paramedics and taken to a hospital, where he remains for further assessment, the police statement said.

Police were continuing to investigate and charges were likely at a later date, they said.