PITTSBURGH — The FBI said a San Francisco man told investigators he was high on a double dose of medical marijuana cookies when he allegedly attacked crew members and forced the diversion of a US Airways flight to Pittsburgh.

A criminal complaint released today said Kinman Chan, 30, was flying from Philadelphia to Los Angeles on Sunday when he began screaming in the restroom, then fought with crew members who tried to get him to sit.

The flight was diverted to Pittsburgh International Airport. Chan was arrested there and jailed until a federal magistrate freed him on bond Tuesday.

Chan's federal public defender is declining to comment.