An FBI investigation into a violent extremist group led to finding a former Georgia sheriff’s deputy who bragged about beating a Black man, fantasized about killing liberal politicians and had a “cache” of illegal firearms prosecutors said. 28-year-old Cody Richard Griggers of Montrose, has plead guilty to one count of possession of an unregistered firearm on Monday now faces a maximum of 10 years in prison and a maximum fine of $250,000, according to a statement from the U.S. Attorney’s Office in the Middle District of Georgia according to NBC News.

FBI agents investigating a San Diego, California, man who was putting “violent political statements on social media” claimed they found texts from Griggers in a group chat called “Shadow Moses” or “Shadmo,” which discussed militia-type prepping, including lengthy discussions of weapons, combat gear and survival techniques. The  former Wilkinson County Sheriff’s deputy alleges in those texts that he “was manufacturing and acquiring illegal firearms, explosives and suppressors,” the statement said.

A criminal complaint filed in November of last year, “Griggers expressed viewpoints consistent with white racially motivated violent extremists, including the use of racial slurs, slurs against homosexuals, and making frequent positive references to the Nazi holocaust.”

He said he worked in the local jail and, on one occasion, in 2019, wrote that he “wrapped up in my AR and forgot to tell y’all that I beat the s— out” of an inmate, substituting a racial epithet. “F—– tried to steal a 33rd glock mag from the local gun store,” the criminal complaint said. Griggers described the beating as “sweet stress relief.”

“It’s a sign of beautiful things to come. Also I’m going to charge them with whatever felonies I can to take away their ability to vote,” he continued, according to the complaint.

The Wilkinson County Sheriff’s Office declined to discuss the allegations against Griggers.

“The Sheriff does not wish to make a statement,” the agency said in a statement Friday to NBC News.

Griggers also offered “Shadmo” members prescription medications he said he had obtained and law enforcement-only ammunition, the complaint said.

He allegedly boasted about recruiting people into “Shadmo,” and gave members instruction on how to make explosives, suppressors, automatic triggers and automatic weapons.