Explosive found in checked luggage at Pennsylvania airport; suspect in custody, feds say

A Pennsylvania man is in custody after an explosive was allegedly found in his checked baggage at Lehigh Valley International Airport on Monday, court documents show. Mark Muffley, 40, was taken into custody by the FBI later that night.

During routine screening by Transportation Security Administration agents, Muffley's bag set off an alarm indicating it contained suspicious items, according to a criminal complaint. TSA personnel found a "circular compound, approximately three inches in diameter, wrapped in a wax-like paper and clear plastic wrap hidden in the lining of the baggage," the complaint said.

The "immediate area" of the airport where the device was found was then evacuated "out of an abundance of caution," TSA said in a statement.