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Federal prosecutors may bring felony charges against the oil worker who had explosives in his carry on bags Sunday at Ted Stevens Anchorage International Airport .

The Justice Department has called the explosives an improvised explosive device, or IED, the Anchorage Daily News said.

The unidentified man was traveling to Deadhorse.

He didn’t intend to bring the IED with him on the airplane, according to Michael Graham, resident agent in charge at the Bureau of Alcohol, Tobacco, Firearms and Explosives for Alaska.

The oil workers said his device was homemade and intended for avalanche control, but not necessarily on the North Slope, Graham said.

At the man’s home, ATF agents found four similar devices.

If the ATF determines them “destructive” — an explosive contained in some sort of container or vessel that could cause damage to people — he could face up to 10 years in prison for possession of an unregistered destructive device, Graham said.

The man had a ticket Sunday for a Shared Services oil worker transport flight.

Anchorage’s Explosive Ordinance Disposal team took the device out of the airport, which had to be shut down while the disposal team worked.

Graham said ATF agents determined it was not a case of domestic terrorism after initial interviews with the man.

Federal authorities said they wouldn’t identify the man until they decide on charges against him.

ConocoPhillips operates Shared Services in a co-venture with BP.

The service transports more than 20,000 employees and contract workers between Anchorage, Fairbanks and the North Slope every month, according to Amy Burnett, a Conoco spokesperson.