A Boston man pleaded guilty today in federal court to robbing a branch of the RTN Federal Credit Union in Brookline and a branch of Mansfield Bank in West Bridgewater in November 2016.

Stephen D. Williams pleaded guilty to two counts of bank robbery. Sentencing is scheduled for March 13, 2018.

Two individuals, one later identified as Stephen Williams, and the other later identified as Joseph Morris, entered a branch of the RTN Federal Credit Union in Brookline. Williams approached a teller and demanded cash. The teller handed Williams cash from her drawer, then the two then fled the scene in a dark-colored Volkswagen.

An individual, later identified as Williams, entered a branch of the Mansfield Bank in West Bridgewater. Brandishing a black semi-automatic firearm, Williams approached a teller and demanded money. The teller handed Williams cash, and Williams again fled in a dark-colored Volkswagen. Bank surveillance cameras recorded images of Williams during the robbery.

Law enforcement officers familiar with both Williams and Morris and the dark-colored Volkswagen located and arrested the two men at an apartment complex in Brockton. Morris was charged in state court and Williams was charged in federal court.

Williams faces a maximum sentence of 25 years in prison, five years of supervised release and a fine of up to $250,000.