Norwich resident Antoine Walker, 42, was sentenced Monday to five years in federal prison for distributing drugs and possessing a gun while on supervised release.

When Norwich police arrested Walker in June 2020, he was on supervised released, after being sentenced in 2013 in the Southern District of New York to more than six years in prison for armed robbery and bank robbery offenses, the U.S. Attorney’s office said in a news release Tuesday.

As part of a drug trafficking investigation in 2020, Norwich police made two controlled purchases of crack from Walker.

The U.S. Attorney’s office said that in a court-authorized search of Walker’s home and garage on June 10, 2020 investigators found about 114 grams of heroin, almost two pounds of marijuana, about 15 grams of crack cocaine, items used to package drugs to sell, and a loaded .38 Special Smith and Wesson revolver.

Walker was arrested on state charges that day and on federal charges two days later, and he has been detained since then. On May 9, he pleaded guilty to one count of possession with intent to distribute heroin, crack and marijuana, and one count of unlawful possession of a firearm by a felon.

Norwich police and the FBI conducted the investigation, and Assistant U.S. Attorney Margaret M. Donovan prosecuted the case.

e.moser@theday.com