With Washington on edge about potential rightwing violence and domestic terrorist ,, a cache of replica guns was discovered. This prompted a huge response near the National Mall. Two people were arrested after authorities claimed they found guns and rifles in an U-Haul truck near the Tidal Basin. The truck is located just a few steps from the White House, U.S. Capitol and U.S. Capitol.

The realistic-looking firearms were actually airsoft guns or rifles. They shoot nonlethal plastic pellets at low speeds and are used often for target practice, tactical training, and games. They are generally legal and not subject to the same regulations as firearms.

The people who were detained cooperated with police officers and were freed, according to Park Police Sgt. Roselyn Norment.

The Tidal Basin, near the Potomac River, surrounds the Jefferson Memorial, Martin Luther King, Jr. Memorial, as well as the FDR Memorial. The investigation saw police close Maine Avenue between the National Mall, the Wharf and the Wharf, NBC Washington reported. The station stated that

Medical emergency responders were placed at the scene to protect the public. The area around the National Mall is on high alert following the Jan. 6 Capitol Riot. In August, a man identified as Floyd Ray Roseberry, 49, parked his pickup truck partially on the sidewalk outside the Library of Congress and engaged in an hours-long standoff as he allegedly claimed to have a bomb, although he did not.

Roseberry, who harbored complaints about the federal government, was later charged with threatening to use a weapon of mass destruction and threatening to use an explosive device. He was ordered by a judge to undergo medical evaluation .

Ten days after the Jan. 6 incursion, a Virginia man was arrested at a Washington checkpoint near the Capitol with an “unauthorized” inauguration pass, a gun and more than 500 rounds of ammunition, authorities said.

But the suspect, identified as Wesley Allen Beeler, 31, told the Washington Post it was “an honest mistake” because he was licensed to carry in nearby Virginia. He claimed that he was working in Washington as a security guard and had forgotten to bring his gun. He denied that he had so much ammunition.

“I don’t consider myself a bad person,” he stated then. “I am not affiliated to any hate groups. “

Pressure on authorities who police the nation’s most powerful institutions isn’t letting up. September will see a rally at Capitol in support of those who were arrested in connection to the Jan. 6 riot. 18.

Image: Dennis RomeroDennis Romero

Dennis Romero writes for NBC News and is based in Los Angeles.

Michelle Acevedo

and

Jay Varela

contributed.