Update: Floyd Ray Roseberry has pleaded guilty to one charge of threats to use explosives during a standoff with police that lasted four hours near the Library of Congress in 2021. The plea was announced Friday Jan. 27 by U.S. Attorney Matthew M. Graves, FBI Special Agent in Charge Michael H. Glasheen of the FBI Washington Field Office’s Counterterrorism Division, and U.S. Capitol Police Chief J. Thomas Manger. Roseberry faces a statutory maximum sentence of 10 years in prison. Sentencing is scheduled for June 15.

Original: Federal prosecutors brought charges Friday against a 49-year-old North Carolina resident who was arrested by U.S. Capitol Police after he claimed to have a bomb in his pickup truck in front of the Library of Congress.

Floyd Ray Roseberry is charged with threatening use of an explosive device and a weapon of mass destruction, according to the charging documents. On Thursday morning, Roseberry drove onto the sidewalk of the Library of Congress, told officers he had a bomb, and held what appeared to be a detonator. Police attempted to negotiate with Roseberry, but it took nearly 6 hours for him to surrender. Police did not find a bomb in the car, but they did find a propane tank and other “possible bomb-making materials,” according to a USCP press release.

According to the U.S. Attorney’s office, Roseberry faces 10 years to life in prison as well as financial penalties. U.S. Magistrate Judge Zia Faruqui ordered Roseberry to remain in a D.C. jail while awaiting trial. Defense attorneys say that Roseberry needs to be evaluated to see if he’s mentally competent to stand trial.

According to a tweet by NBC4’s Scott MacFarlane, Roseberry told the judge that he had only an eighth grade education, and that he hadn’t take his “mind medicine” in two days, and that his wife has power of attorney over his medication.

The judge assigned Roseberry a public defender and scheduled a status hearing for next Wednesday.

Further information about the incident from Brandon Camiliere, a special agent with the FBI, reveals that a rusted can was recovered from Roseberry’s truck, according to an affidavit. The can apparently contained an unknown powder and had a “fabricated trigger” attached to the top. The can was sent to an FBI lab for further examination. The affidavit included a transcript of a Facebook video Roseberry recorded during the incident. It included rambling statements about President Joe Biden, as well as threats:

“I got a bomb in here. I don’t want nobody hurt. Yes sir, I don’t want nobody hurt. I’m not coming here to hurt nobody. I’m not lying, tell them there’s some more.” Roseberry said in the Facebook video.

The incident Thursday led to the evacuation of the U.S. Capitol and several surrounding blocks, with Metropolitan Police officers going door-to-door in the area from 2nd Street SE to 4th Street SE and A Street to Independence Avenue SE telling residents to evacuate. While Congress was not in session, staffers were working.