Capitol Police arrested a man Tuesday afternoon who was stopped during a screening at the Capitol Visitor Center because he smelled like fuel and had a torch and a flare gun, the department announced. The visitor center was closed to tours as Capitol Police investigate, according to a social media post. A Capitol Police spokesperson said no additional information was available as of 2 p.m. The Capitol Visitor Center, the Library of Congress and the Botanic Garden were all open Tuesday despite heightened security throughout the city. The Library of Congress and Botanic Garden will remain open to visitors. Related Articles National Politics | 2024 presidential election results National Politics | 2024 Senate election results across the U.S. National Politics | 2024 House election results across the U.S. National Politics | Results of 2024 ballot measures across the U.S. National Politics | Survey: Economy ranked as a top issue, but concerns over democracy drove many voters to polls Police say they are still investigating. Capitol Police put up bike rack barricades ahead of Election Day, as well as fencing on the west side of the campus around the area where the Inauguration Day stage will be located. Some businesses around the city have boarded up their windows. The arrest comes as authorities are on heightened alert for security issues around the nation’s capital and have increased patrols in areas downtown and near the White House around Election Day. Nearly four years ago, a mob of Donald Trump’s supporters attacked the U.S. Capitol on Jan. 6, 2021. “Beginning with early voting last week and through Election Day tomorrow and up until the inauguration, our team has one focus, and that is how to keep Washington D.C. safe and secure for residents and visitors throughout election week and beyond,” Washington Mayor Muriel Bowser said at a press briefing on security from Metropolitan Police headquarters Monday afternoon. Metropolitan Police Department Chief Pamela Smith said the department would be working with Capitol Police and other law enforcement to ensure a safe post-election period. “We are in close contact with the U.S. Capitol Police, as with our other federal partners, on a regular basis, a daily basis,” Smith said. Reporting by Mike Balsamo, Associated Press, and Justin Papp, CQ-Roll Call, was used to compile this report.