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Maine’s supreme court said a man’s conviction of both felony murder and felony robbery violated the U.S. Constitution’s double-jeopardy clause.

The court made the finding Tuesday in ordering a judge to limit the conviction to one charge and issue a new sentence for Aubrey Armstrong of Far Rockaway, New York.

A judge originally sentenced Armstrong to 30 years for felony murder and issued a 30-year concurrent sentence with one year suspended for felony robbery. Armstrong was convicted in the killing of Joseph Marceau of Augusta, who was bound and beaten in 2015.

Under Maine law, a person is guilty of felony murder when a death is caused during the commission of a felony crime. Two other defendants pleaded guilty to felony murder. A fourth suspect committed suicide in jail.