A Southwest Airlines passenger was hospitalized after allegedly opening a planes emergency exit door and then climbing onto the planes wing.

The plane was preparing for takeoff at 7:41 p.m. Sunday at the Louis Armstrong New Orleans International Airport in Louisiana when the incident took place before the plane left the gate, the Jefferson Parish Sheriffs Office said in a release.

Its not clear what prompted the episode, though authorities said the man appeared to be experiencing a mental health emergency, adding that he was incoherent and not fully aware of his surroundings.