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 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: Police have taken a man into custody following a standoff and bomb threat near the U.S. Capitol. Authorities say the man, who they identified as 49-year-old North Carolina resident Floyd Ray Roseberry, surrendered to police after an hours-long negotiation.

Authorities said Roseberry drove a black pickup truck onto the sidewalk in front of the Library of Congress near First Street and Independence Avenue SE around 9:15 a.m. on Thursday. U.S. Capitol Police Chief J. Thomas Manger said Roseberry told an officer he had a bomb and appeared to hold a detonator in his hand.

Law enforcement then tried to negotiate with him — first by writing on whiteboards, and then by attempting to deliver a phone to him using a robot. Manger said that Roseberry initially refused to use the telephone, but shortly after authorities delivered it to him, he got out of his vehicle and surrendered.

“The tactical units that were nearby took him into custody without incident,” Manger said. D.C. police alerted the public shortly after 4:30 p.m. that the vehicle was cleared from the scene.

Manger said there was no indication that Roseberry acted in connection with any other individuals, but police would continue to investigate. Manger said police saw “concerning” items in Roseberry’s truck, including a tank of propane gas. USCP said in a release Thursday evening that authorities did not find a bomb in the car, but did recover “possible bomb-making materials.”

In a live video posted on Facebook Thursday morning, a man who appeared to be Roseberry sat in a truck on the sidewalk in front of the Library of Congress and repeatedly referred to a bomb inside the truck as he aired political grievances.

The man appeared to clutch a large metal can and repeatedly addresses President Joe Biden, urging Democrats in the White House and Congress to step down from office. The man claimed shooting through the truck’s windows would set the bomb off.

“Shoot me, get the revolution started, Joe,” the man said.

A spokesperson for Facebook confirmed to Politico that the company deactivated the suspect’s livestream and removed his profile from the platform.

The man in the video also alleged that there were four to five other bombs planted across D.C. Asked about that claim by a reporter Thursday afternoon, Manger said the department is “not aware of other bombs around the city.”

Manger said Roseberry will face criminal charges.

A DCist reporter Thursday morning saw bomb dogs sniffing near the Library of Congress. Police blocked off the entrance to the Supreme Court at 2nd Street and Maryland Avenue Northeast. Police also sent snipers to the scene.

The Metropolitan Police Department, D.C. Fire And EMS, the FBI Washington Field Office’s National Capital Response Squad, and the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) were also dispatched to the scene.

Officers with MPD went door-to-door evacuating residents in the area from 2nd Street SE to 4th Street SE and A Street to Independence Avenue SE. D.C. Mayor Muriel Bowser told residents in a tweet shortly after 11:30 a.m. to avoid the area near the Capitol.

The Jefferson and Madison buildings in the Library of Congress were also evacuated, according to an alert the House Sergeant at Arms sent to congressional staff. People inside the Cannon House Office Building were routed to the Longworth House Office Building through underground tunnels.

Most lawmakers are not in their offices because the House and Senate are not in session, but staff were still working inside the buildings.

Independence Avenue and 1st Street Southeast were closed during the investigation, according to the alert, which warned the situation would require “a prolonged law enforcement response.” All roads reopened by 4:30 p.m., according to D.C. police. Metrorail, which had been bypassing the Capitol South Station because of the police investigation, resumed normal operations shortly after 5 p.m.

While reports of “suspicious packages” shut down D.C. sidewalks and streets on a relatively frequent basis, the incident on Thursday harkened back to the smaller number of moments in recent history when possible threats led to much larger police responses. In 2015, a man flying a gyrocopter landed on the National Mall, scrambling police and resulting in a four-month jail sentence. And in 2003, a farmer drove his tractor into a pond at Constitution Gardens, prompting a days-long standoff that shuttered parts of the mall.

Morgan Baskin, Mary Tyler March, Martin Austermuhle, and Lori McCue contributed reporting.