Police have arrested a South Dakota man and, upon a search of his home, discovered explosive devices, illegal guns, a homemade firearm silencer, and Antifa material, according to a report.

Mark Einerwold, 43, was detained following a search conducted as part of an investigation into three burglaries that had been reported in the Sioux Falls area since June, KDLT News reports.

Authorities also found bomb-making materials and chemicals, including aluminum nitrate and aluminum powder. A manifesto that suggested Einerwold was anti-government and a jacket that linked him to Antifa were additionally recovered from his home, Minnehaha County Sheriff Capt. Jason Gearman told the Argus Leader.

Einerwold is being charged in Minnehaha and Lincoln Counties in relation to a string of burglaries and the illegal possession of weapons, in addition to being charged with sale and transportation of a destructive device. He appeared in court Wednesday and is being held on a $200,000 cash-only bond, the Argus Leader added.