A Maryland man has been arrested for his role in the January 6th domestic terrorist attack on the Capitol thanks to friends who informed the FBI of a photo he posted on Facebook showing him at the coup attempt, the Baltimore Sun reports.

Matthew Ryan Miller, 22, of Cooksville, Maryland, posted a photo of himself wearing a cowboy hat and draped in a Maryland flag and a Gadsden flag at the rally on the Ellipse prior to the attack on the Capitol.  Video shows a man in the same clothing overturning a metal barricade and using it to climb up a wall into the Capitol.

The federal judge denied bail to Miller, who is charged with knowingly entering or remaining in any restricted buildings or grounds without lawful authority, and doing so with a dangerous weapon; knowingly engaging in disorderly or disruptive conduct in a restricted building or grounds with a dangerous weapon; and violent entry and disorderly conduct on Capitol Grounds.

Miller attempted to tell the judge that he was no longer a danger, and that although he had lost his job due to his involvement in the coup attempt, he was working toward obtaining an insurance license. He also claimed that he was responsible for caring for an elderly relative.

D.C. Magistrate Judge Zia M. Faruqui called Miller’s alleged actions, which included turning a fire extinguisher on law enforcement, “quite severe and quite concerning” and said she knew of no conditions for bail that would prevent Miller from undertaking continued insurrectionist actions.