In a strange turn of events, a man on an early morning American Airlines flight touched the faces of fellow passengers and sprayed them with an unknown substance.

The man was engaging in bizarre behaviour, swearing at passengers and becoming aggressive, on the flight from Minneapolis, Minnesota to Phoenix, the Arizona Republic reported.

As the plane was landing, the 25-year-old began to touch the faces of other travellers and sprayed them with an unidentified substance from a spray bottle the man had brought on the flight. He was then brought to the front of the plane to disembark the aircraft before the other passengers.

Before the main door opened, the man opened a service door on the other side of the aeroplane, jumping 10ft onto the tarmac.

Paramedics and police both reported to the scene, where the man was taken into custody without issue.

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The man sustained minor injuries and was evaluated and treated at a local hospital.

No passengers decided to press charges against the man, but local prosecutors have pending trespassing charges against him. He has yet to be identified.