A Maryland sheriff was indicted by a federal grand jury Wednesday over an alleged scheme to illegally purchase machine guns, authorities say.

The U.S. Department of Justice (DOJ) said Frederick County Sheriff Charles Austin Jenkins and Maryland firearms dealer Justin Krop conspired to purchase the machine guns between August 2015 and May 2022.

Krop, who owns multiple businesses in Frederick County, had two licenses to possess and deal machine guns in certain circumstances. But he allegedly possessed seven machine guns illegally.

Both men are accused of falsifying Frederick County Sheriff’s Office documents that requested machine guns for evaluation and demonstration. The DOJ said both men did so knowing the guns would not be evaluated or demonstrated.

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Jenkins speaking to crowd

Frederick County Sheriff Charles Jenkins addresses a crowd at Urbana High School about the heroin problem in the county Oct. 21, 2014, in Frederick, Md.  (Getty Images)

The two men reportedly used the documents to supply machine guns that Krop's customers could rent. Krop allegedly drafted the documents while Jenkins signed them. 

Authorities believe Jenkins intended to leverage political support from Krop and his customers.

Krop faces a maximum sentence of fifteen years in federal prison, while Jenkins faces five years.

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Jenkins on phone call

Frederick County Sheriff Charles Jenkins takes a phone call while working in his office at the Frederick County Law Enforcement Center July 23, 2013, in Frederick, Md. (Ricky Carioti/The Washington Post via Getty Images)

The Frederick County Sheriff's Office held a press conference hours after being notified of the indictment by the DOJ.

"Sheriff Jenkins continues to serve as our sheriff, and he will do so as professional as he is. He will still keep an open-door policy," spokesman Todd Wivell said. "He will still talk. He's been advised by his counsel to not talk about the situation at all."

Wivell also read a statement from Jenkins aloud.

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Close-up of Sheriff Jenkins

Charles Jenkins, sheriff of Frederick County, Md., listens during a press conference in the briefing room of the White House in Washington, D.C., Oct. 10, 2019.  (Alex Wroblewski/Bloomberg via Getty Images)

"At the advice of my attorney and out of respect for the justice process, I am not providing any comment at this time," Jenkins' statement said. "I will continue to serve as your sheriff as this process plays out and fully expect my deputies, correctional officers and staff to remain the true professionals that they are."