Mark Andrew Mazza, 56, of Shelbyville, was arrested last week for allegedly being part of the group who breached the U.S. Capitol on Jan. 6, 2021.

Federal agents and U.S. Capitol Police have accused Mazza of illegally having a firearm on Capitol grounds, civil disorder, and assaulting, resisting, or impeding certain officers with a dangerous weapon. Mazza is also accused of obstructing justice by interrupting a Congressional proceeding and by lying to local, state and federal investigators during a Grand Jury investigation.

According to court documents, Mazza posted pictures online of himself at the “Stop The Steal” rally in Washington, D.C. on Jan. 6.

A U.S. Capitol Police sergeant reported fighting with a man around 2:30 p.m. Jan. 6 in west front terrace area of the Capitol building. According to the officer, that man and others “attempted to physically overtake” him and other police officers. The sergeant reported that a pistol fell from the waistband area of the subject’s pants during the struggle. The man that allegedly fought with the officer left the area in the large crowd and was not apprehended.

The firearm was reportedly identified as a Taurus Revolver branded “The Judge.” The handgun was loaded with .410 gauge shotgun shells and .45 caliber hollow-point rounds, according to the court documents. Investigators determined that gun was registered to Mazza.

On Jan. 8, Mazza reported to the Shelbyville Police Department that he had left his Judge Revolver in a rental car overnight Jan. 5 while he was in a casino in Cincinnati, Ohio, and when he returned to his car around midnight, the handgun was missing.

A U.S. Capitol Police investigators reportedly interviewed Mazza at Mazza’s Shelbyville home on March 29. According to the report, Mazza told the investigators that he was at the U.S. Capitol on Jan. 6 for the “Stop the Steal” rally and had the handgun on him.

Mazza reportedly told officers he entered the Capitol Building to stop protestors who were trying to break windows on the building. Mazza told investigators he was trying to close a glass door when police began pepper spraying people in the hallway. Mazza said he was smashed behind the door when the shoulder holster carrying his pistol broke and he didn’t have time to pick up the gun.

Mazza reportedly told the officers the gun was a Taurus Judge “with 45 long and 410 slugs” ammunition.

According to the investigator’s report, Mazza reported the gun stolen to Shelbyville police “in case something happened and if Antifa found it, someone might get killed and my name is all over it.” “Antifa” is a political movement that stands for “anti-fascist” and started in 2017.

Mazza told investigators that he did not fight with any police officers in the U.S. Capitol. He told the investigators that he helped two police officers get away from protestors.

Security camera footage from inside the Capitol was included with the court documents. Still photos appear to show Mazza enter the building with a group of protestors and then standing behind a glass door. The pictures appear to show Mazza wearing an American flag or similar patterned fabric draped over his shoulders, similar to the photo he allegedly posted to his social media earlier in the day.

Another photo appears to show Mazza holding an extendable baton.

“The video footage reviewed does not show that Mazza assaulted either officer with the baton but suggests he may have attempted to thwart other rioters from attacking the officers,” the report stated.

Mazza appeared in U.S. Southern District of Indiana Federal Court on Thursday and is being held without parole.

The U.S. Attorney’s Office for the District of Columbia and the Justice Department’s National Security Division are prosecuting the case, with assistance provided by the U.S. Attorney’s Office for the Southern District of Indiana.

The U.S. Capitol Police and the FBI’s Indianapolis Field Office investigated the case, with assistance from the Metropolitan Police Department (MPD), and the FBI’s Washington Field Office.