An Argonne National Laboratory employee has admitted to assaulting law enforcement officers during the Jan. 6, 2021 riot.
Robin Lee Reierson, 69, of Schiller Park, pleaded guilty Monday to a felony charge of assaulting, resisting, or impeding certain officers.
Reierson was among a group of rioters gathered in the West Plaza of the U.S. Capitol building, according to court documents. He used his body to push against a barrier and into a line of police officers, the documents said.
He eventually left the West Plaza, but told other rioters “Don’t stop, keep going,” according to a statement from U.S. Attorney’s Office.
About a week after the attack on the Capitol, someone sent a tip to the FBI that an employee of Argonne National Laboratory was possibly involved in the riot. Reierson was employed as a lead welder at Argonne for over 40 years.
The FBI matched images from videos to Reierson’s Illinois driver’s license and began surveillance of his home. Agents observed him leaving in a cargo van with the same Illinois license plates that tollway records indicate was driven to Washington, D.C., on Jan. 5, 2021, and back to Illinois on Jan. 7, 2021.
The FBI arrested Reierson on Aug. 23, 2023.
He was initially charged with assaulting an officer, obstruction of law enforcement, entering a restricted building and engaging in disorderly conduct with the intent of impeding Congress.
Reierson is one of nearly 50 known Illinois residents to face federal criminal charges connected to the Jan. 6 attack.
He will be sentenced by U.S. District Judge Reggie B. Walton on Oct. 16.