US Capitol is once again secured but a woman is dead after supporters of President Donald Trump breached one of the most iconic American buildings, engulfing the nation's capital in chaos after Trump urged his supporters to fight against the ceremonial counting of the electoral votes that will confirm President-elect Joe Biden's win, CNN reported.

Shortly after 1 p.m. ET Wednesday hundreds of pro-Trump protesters pushed through barriers set up along the perimeter of the Capitol, where they tussled with officers in full riot gear, some calling the officers "traitors" for doing their jobs. About 90 minutes later, police said demonstrators got into the building and the doors to the House and Senate were being locked. Shortly after, the House floor was evacuated by police. Vice President Mike Pence was also evacuated from the chamber, he was to perform his role in the counting of electoral votes.

An armed standoff took place at the House front door as of 3 p.m. ET, and police officers had their guns drawn at someone who was trying to breach it. A Trump supporter was also pictured standing at the Senate dais earlier in the afternoon.

A woman is dead after being shot in the chest on the Capitol grounds, DC police confirmed to CNN. More information on the shooting was not immediately available and a police spokesperson said additional details will come later.

Multiple officers have been injured with at least one transported to the hospital, multiple sources tell CNN.

Smoke grenades were used on the Senate side of the Capitol, as police work to clear the building of rioters. Windows on the west side of the Senate have been broken, and hundreds of officers are amassing on the first floor of the building.