Two men accused of being members of a violent white supremacist group called The Base pleaded not guilty Tuesday to charges in a federal indictment in Maryland.

Brian Mark Lemley Jr., 33, of Elkton, Maryland, entered the plea during his arraignment on charges including illegal transportation of a machine gun and transporting a firearm and ammunition with the intent to commit a felony.

William Garfield Bilbrough IV, a 19-year-old pizza delivery driver who lived with his grandmother in Denton, Maryland, before his arrest, pleaded not guilty to charges including conspiracy to “transport and harbor certain aliens.”

A third man charged in the case, former Canadian Armed Forces reservist Patrik Mathews, was scheduled for arraignment later Tuesday.

In a court filing, Justice Department prosecutors said Lemley and Mathews discussed “the planning of violence” at a gun rights rally in Richmond, Virginia, in January. A closed-circuit television camera and microphone installed by investigators in a Delaware home captured Mathews talking about the Virginia rally as a “boundless” opportunity, prosecutors said.

In this file image from a Jan. 1 surveillance video released by the U.S. Attorney's Office in Maryland, Brian Mark Lemley Jr., right, and Patrik Mathews leave a store in Delaware where they purchased ammunition and paper shooting targets. The pair, along with William Garfield Bilbrough IV, were arrested in January and are accused of plotting to commit violence at a Virginia gun rights rally.
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“And the thing is you’ve got tons of guys who ... should be radicalized enough to know that all you gotta do is start making things go wrong and if Virginia can spiral out to ... full blown civil war,” he said.

Lemley talked about using a thermal imaging scope affixed to his rifle to ambush unsuspecting civilians and police officers, prosecutors said.

“I need to claim my first victim,” Lemley said Dec. 23, according to prosecutors.

Bilbrough, the only defendant in the case who isn’t facing firearms-related charges, participated in their early discussions about traveling to Richmond but recently had tried to distance himself from the group, a prosecutor has said.

A grand jury in Maryland handed up the 12-count indictment Jan. 27, nearly two weeks after FBI agents arrested Bilbrough in Maryland and Matthews and Lemley in Delaware.

U.S. Magistrate Judge Timothy Sullivan ordered all three defendants to remain in federal custody while they await a trial in Greenbelt, Maryland.

Mathews, 27, and Lemley also were indicted last month in Delaware on separate but related charges.

FBI agents arrested Mathews, Lemley and Bilbrough as part of a broader investigation of The Base. Authorities in Georgia and Wisconsin also arrested four other men linked to the group.