A passenger was arrested on Thursday in Philadelphia airport after a reported bomb threat on a plane from New York, the Federal Bureau of Investigation (FBI) said.
"There's an individual in custody," an FBI spokesman in Philadelphia told AFP.
US television reported that a US Airways flight from LaGuardia in New York to Louisville in Kentucky was diverted to Philadelphia for security reasons.
According to CBS 3, a male passenger strapped a wire for his fingers to his head.
"We don't have any information now," the FBI spokesman said. "There's a plane on the ground in Philadelphia. We've got all our units there."