PORTLAND, Maine (AP) — Navy investigators say a civilian employee working as a painter and sandblaster aboard a submarine at a Maine shipyard has been charged with setting a fire that heavily damaged the vessel in May, and a second near it in June.

In a complaint filed Monday in federal court in Maine, the Naval Criminal Investigative Service says 24-year-old Casey James Fury has been charged with two counts of arson involving the USS Miami.

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WBZ NewsRadio 1030’s Bernice Corpuz reports

The submarine has been in dry dock for an overhaul at the Portsmouth Naval Shipyard in Kittery.

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Court documents say Fury was assigned to do paint stripping in the torpedo room. He first denied involvement in the fires, then later admitted involvement.

Fury was scheduled for a court appearance Monday.

Estimates put the damage at $400 million.

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Copyright 2012 The Associated Press.