Middle Easterner draws suspicions because he had ................ Diarrhea'

"... Law enforcement briefly questioned a passenger Tuesday who alarmed other passengers when he used the airplane's bathroom several times on a flight from Charlotte, North Carolina to Denver,..
The passenger on U.S. Airways flight 1525 was not arrested. Law enforcement is trying to confirm the passenger had a medical condition. He is of Middle Eastern descent.
A K-9 unit was brought on board the plane as a precaution, ..."