ALLENTOWN, Pa. — Investigators say a Pennsylvania man was arrested this week after Transportation Security Administration officers allegedly found an explosive device hidden in a piece of luggage being checked onto a Sanford-bound airplane.

While the alleged explosive was found in the bag Monday morning at Lehigh Valley International Airport, agents say the bag's owner, Mark Muffley, whose date of birth was only listed as sometime in 1982, was arrested by the FBI Tuesday at his home.

An arrest warrant in the case did not explain why Muffley was arrested a day after the discovery.

Officials say Muffley's suitcase triggered an alarm when it entered the baggage screening unit, which required a TSA officer to physically inspect the contents of the luggage. During the inspection, the TSA officer located an item inside the suitcase that appeared to be suspicious and was believed to possibly be a live explosive device.

According to an FBI arrest warrant, flash powder and granular powder of the kind used in commercial fireworks were found wrapped in wax paper and plastic wrap, and hidden in the lining of the bag.

Two fuses were attached to the device, and a can of butane, a lighter, a pipe with white powder residue, a wireless drill with cordless batteries and two GFCI outlets taped together with black tape were also found in the bag, the warrant said.

"Based on my training and experience ... both the black powder and flash powder are susceptible to ignite from heat and friction and posed a significant risk to the aircraft and passengers," the reporting agent wrote.

Out of an abundance of caution, officials say they decided to evacuate the immediate area, and the Lehigh-Northampton Airport Authority Police and the FBI were notified.

Experts with the FBI and local law enforcement bomb technicians reported that the item was a live explosive device.

“Transportation Security Officers are highly trained and highly skilled professionals at the front line of aviation security who are focused on their mission and catches such as this illustrate the point,” said TSA Federal Security Director Karen Keys-Turner. “This is an example of how the strong partnerships we have established with the airport authority, FBI and local law enforcement came together to ensure the safety and security of the traveling public. I commend our entire TSA team at Lehigh Valley International Airport and the professional manner in which this incident was handled.”

Muffley was charged with possession of an explosive in an airport and attempting to bring and explosive onto an aircraft.