An air traffic controller who works at a North Carolina airport was arrested Friday for having a weapon of mass destruction.

Paul George Dandan, the 30-year-old FAA employee, was arrested along with Derrick Fells, 39, on Friday night.

Dandan had some kind of explosive, which was not at the airport, sources say.

Dandan's roommate was also arrested for having bomb-making materials at home.

Officials at Charlotte Douglas International Airport said Dandan had access to an offsite air traffic control tower, but wouldn't have been able to get to any aircraft.

Authorities say Fells told detectives that he built the bomb with the intent of using it against a neighbor but changed his mind and handed it over to Dandan.

The Charlotte Observer reports that Dandan did not have the weapon of mass destruction at the airport at the time of his arrest. Dandan was being held on $45,000 bond, while Fells' bond was $60,000.

Paul George Dandan, 30, is charged with possession of a weapon of mass destruction, acquiring a weapon of mass destruction and transporting a weapon of mass destruction.

Fells was charged on three counts of manufacturing a weapon of mass destruction and one count of possession of a weapon of mass destruction.

The arrests arose out of an investigation into a November 3 call to police concerning an individual with an explosive, according to WCNC in Charlotte.

Items that could make a pipe-bomb were found in Dandan's home, the source said.

The FAA also confirmed that they had "terminated [Dandan's] access to the facility and is investigating".

The FBI is assisting local police with the investigation but said federal charges aren't expected at the moment.