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The FBI has arrested three alleged members of The Base – which authorities describe as a "racially motivated violent extremist group" – on charges that range from illegal transport of a machine gun to harboring aliens, according to the 

A law enforcement official tells NPR that the three suspected members of The Base had discussed going to a controversial pro-gun rally in Virginia next week.

The three men are Brian Mark Lemley, Jr., 33, of Elkton, Md.; William Garfield Bilbrough IV, 19, of Denton, Md.; and Canadian national Patrik Jordan Mathews, 27, who entered the U.S. illegally last summer. Mathews and Lemley had recently been living in Newark, Delaware. 

The arrests come days before a pro-gun demonstration that's slated to take place in Richmond, Va., Monday — and just after Gov. Ralph Northam 

 and banned firearms on the Capitol grounds in Richmond in anticipation of the gun rights demonstration.

"We have received credible intelligence from our law enforcement agencies that there are groups with malicious plans for the rally that is planned for Monday," Northam said Wednesday afternoon.

The criminal case against Lemley, Bilbrough and Mathews was filed under seal Tuesday; it was unsealed today after their arrests. The defendants are appearing before a federal judge Thursday afternoon for an arraignment at U.S. District Court in Greenbelt, Md., just east of the Capital Beltway.

Two of the men who were arrested have previous military training: Lemley was a cavalry scout in the Army, and Mathews previously served as a combat engineer in the Canadian Army Reserve.

Mathews apparently entered the U.S. just days after a high-profile police raid on his house in rural Manitoba, Canada, last August. As 

 reported, police ordered Mathews out of his house so they could execute a search warrant related to suspicions that he was acquiring guns and recruiting for The Base — which the CBC called "a global neo-Nazi terrorist group."

MN authorities look for former Canadian reservist linked to right-wing extremist group

The FBI says Lemley and Bilbrough drove together from Maryland to Michigan to pick up Mathews after he illegally entered the U.S. near the Manitoba/Minnesota border. The trio then traveled to Maryland's Eastern Shore area, where Bilbrough lives, the FBI says. 

Lemley and Mathews then set up a residence in neighboring Delaware, where authorities say they started working to build an illegal assault rifle and acquire ammunition. 

"Lemley and Mathews used an upper receiver ordered by Lemley, as well as other firearms parts, to make a functioning assault rifle," the U.S. Attorney's Office says, citing an affidavit that FBI Special Agent Rachid Harrison filed in support of the charges. 

Earlier this month, the U.S. Attorney's Office says, Lemley and Mathews "purchased approximately 1,650 rounds of 5.56mm and 6.5mm ammunition; traveled from Delaware to a gun range in Maryland, where they shot the assault rifle; and retrieved plate carriers (to support body armor) and at least some of the purchased ammunition from Lemley's prior residence in Maryland."

It appears federal authorities had the men under surveillance, as Harrison's affidavit details their movements and quotes from their conversations. One section of the FBI affidavit describes Lemley taking the assault rifle to a gun range in Maryland: "An FBI agent observed Lemley at the gun range, and hear what appeared to be more than one bullet being fired at a time." 

When Lemley returned to the Delaware apartment he shared with Mathews, he said the rifle "would have to be cached though because that's an ATF f****** nightmare," and adding "Oh oops, it looks like I accidentally made a machine gun." 

Lemley then said he would partially dismantle the gun in case agents from the Bureau of Alcohol, Tobacco and Firearms and Explosive visits the apartment – to which Mathews replied, "Um, if they show up here, we got other problems."

When the two men returned to the same gun range in Maryland three days later, the FBI was ready. Its agents had set up a camera near the gun range, allowing them to record Lemley and Mathews with the illegal firearm. 

The Base's members use encrypted chat rooms to discuss their supremacist agenda, the FBI says. According to court documents, the extremists frequently discuss topics such as "recruitment, creating a white ethno-state, committing acts of violence against minority communities (including African-Americans and Jewish-Americans), the organization's military-style training camps, and ways to make improvised explosive devices."

Summarizing the most serious charges in the case, the U.S. Attorney's Office says Lemley and Mathews could each face a maximum of 10 years in prison if they're convicted of "transporting a firearm and ammunition in interstate commerce with intent to commit a felony offense." 

Lemley faces additional charges, from transporting a machine gun in interstate commerce to providing a gun and ammunition to an illegal alien. And Mathews  could face a maximum of 10 years if he's convicted of being an alien in possession of a firearm and ammunition. 

In addition to those charges, both Lemley and Bilbrough could face a maximum sentence of five years for allegedly transporting and harboring Mathews. 

NPR's Hannah Allam and Ryan Lucas contributed to this report.

Crime, Law and Justice

Bill Chappell

Author

The three suspected members of The Base had discussed going to Monday's pro-gun rally in Virginia, a law enforcement official tells NPR. The FBI says they also made an assault rifle.

FBI arrests 3 alleged members of white supremacist group ahead of Richmond rally

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