A Waterville man who formerly lived in Winthrop will spend 15 years in federal prison for being a felon in possession of ammunition.

Brian T. Mulkern, 35, was sentenced Thursday in U.S. District Court in Bangor. Mulkern had pleaded guilty to the charge on Aug. 15, 2015.

Mulkern had previous felony convictions for burglary and robbery and attempted trafficking in heroin.

He most recently had received a 28-month sentence in state prison for the trafficking offense, which occurred in February 2012 in Winthrop.

On Aug. 26, 2014, Mulkern was arrested Aug. 26, 2014, in possession of 10 rounds of 9-mm ammunition.

The 15-year prison sentence is to be followed by five years of supervised release.

The prosecutor was Assistant U.S. Attorney Jodi B. Mullis. Mulkern was represented by attorney Jon A. Haddow.

According to the U.S. Attorney’s Office, the investigation was conducted by the Bureau of Alcohol, Tobacco, Firearms, and Explosives and the Winthrop Police Department.

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