Washington  - A US man who stripped off mid-flight, forcing flight attendants to cover him with a blanket and the pilot to reroute the flight, will face psycholgical evaluation, reports said Thursday.

The 50-year old passenger, Keith Wright, was aboard US Airways flight 705 to Los Angeles from Charlotte, North Carolina, on Tuesday night when he shocked fellow passengers by standing up and starting to disrobe.

Two police officers, who happened to be on the flight, forced him to the back of the plane and he was removed from the plane with just a blanket around his body after the plane landed at Alburquerque in New Mexico.

Initially Wright was suspected of having been drunk, but now officials believe it may have been a combination of drugs and altitude, the Los Angeles Times reported.(dpa)