PORTLAND, Maine (AP) -- Navy investigators have determined that a civilian laborer set a fire that caused $400 million in damage to a nuclear-powered submarine because he had anxiety and wanted to get out of work early.

Casey James Fury of Portsmouth, N.H., faces up to life in prison if convicted of two counts of arson in the fire aboard the USS Miami attack submarine while it was in dry dock May 23 and a second blaze outside the sub on June 16.

The 24-year-old Casey was taking medications for anxiety and depression and told investigators he set the fires so he could get out of work, according a seven-page affidavit filed Monday in U.S. District Court in Portland.

Fury made his first court appearance Monday afternoon but did not enter a plea.

Magistrate Judge John Rich III scheduled a combined detention and probable cause hearing for next month. The U.S. attorney's office has filed a motion asking that Fury be held without bail.

Fury's federal public defender, David Beneman, did not speak in court and earlier in the day declined to comment to The Associated Press.

People who appeared to be family members attended the hearing but also declined to comment.

The Miami was in dry dock at Portsmouth Naval Shipyard in Kittery, Maine, for an overhaul when the fire damaged the torpedo room and command area inside the forward compartment. It took more than 12 hours to extinguish.

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