POST, Texas (AP) — Federal prosecutors say a suspected neo-Nazi is facing a gun charge following an FBI investigation.

Authorities charged 23-year-old Aiden Bruce-Umbaugh with possession of a firearm by an unlawful user of a controlled substance after he was arrested in Post, Texas. A federal grand jury indicted him Wednesday.

Defense attorney Michael L. King declined comment Friday except to point out Bruce-Umbaugh has no criminal record.

The U.S. Attorney’s Office for the Northern District of Texas said in a statement that Bruce-Umbaugh was a passenger in a car stopped by local law enforcement Nov. 4.

Authorities recorded discovering an AR-15 rifle, two AK-47 rifles, a 9mm pistol, at least 1,500 rounds of ammunition, a small canister of marijuana and roughly two grams of THC oil inside the car.

Authorities believe Bruce-Umbaugh he is a member of AtomWaffen Division, a neo-Nazi hate group.