Court documents say that Johnston entered the upper west tunnel, where some of the most violent attacks of the Jan. 6 attack took place and"assisted at least three other rioters by pouring water on the rioters' faces." He then used a stolen U.S. Capitol Police shield as rioters battled with police, the documents say.
An attorney representing Johnston contacted the FBI's National Threat Operations Center on March 8, 2021, according to the bureau. Three of Johnston's current or former associates told the FBI that Jan. 6 photos depicted Johnston, and one of the associates provided a message in which Johnston acknowledged being at the Capitol on Jan. 6.
More than 1,000 people have been arrested in connection with the Capitol attack, and hundreds more arrests are in the works.