Senate minority leader Chuck Schumer is calling for the removal of President Donald Trump following Wednesday’s violent insurrection by extremists who were encouraged by the president.

“What happened at the US Capitol yesterday was an insurrection against the United States, incited by the president,” Schumer said in a statement on Thursday morning. “This president should not hold office one day longer.”

On Wednesday, thousands of Trump supporters stormed the Capitol building in Washington, DC after Trump gave a speech falsely claiming the election was stolen from him, and encouraging his supporters to march to the Capitol.

Four people were killed in the ensuing violence, including a woman who was shot.

“The quickest and most effective way – it can be done today – to remove this president from office would be for the vice president to immediately invoke the 25th Amendment,” Schumer said. “If the vice president and the cabinet refuse to stand up, Congress should reconvene to impeach the president.”