(07-24) 17:22 PDT SACRAMENTO -- A Vallejo rapper is facing federal drug charges after being arrested at Sacramento International Airport with 6,000 ecstasy pills hidden in his clothes, authorities said Thursday.

Steven Noel Davison, 34, of Vallejo, also known as "PSD," "PSD tha Drivah" and "Stevie Dee," was trying to board a flight to Oklahoma on July 14 when he was selected for a security screening, federal prosecutors said.

Transportation Security Administration agents were patting Davison down when they felt a large bulge inside his right pants leg, authorities said. The rapper told the screeners at first that the object was a colostomy bag, investigators said.

Davison then tried to leave, but a TSA supervisor told him he could be examined privately. Davison again tried to leave and said he had to go to the restroom, authorities said.

The rap artist was escorted to the private screening area, where a Sacramento County sheriff's deputy found $5,600 in $100 bills in his front left pocket, Special Agent Brian Nehring wrote in an affidavit filed Wednesday in U.S. District Court in Sacramento.