"We deplore the desecration of the United States Capitol building, the shedding of innocent blood, the loss of life and the quagmire of dysfunction that threaten our democracy," he said.
A shaken Congress on Thursday (January 7) formally certified Democrat Joe Biden's election victory.
Immediately afterward, the White House released a statement from Trump in which he pledged an "orderly transition" when Biden is sworn into office on Jan. 20, although he repeated his false claim that he won the November election.
On Wednesday (January 6), the Republican president had seemingly encouraged his followers to swarm the Capitol.
Police said four people died during the chaos - one from gunshot wounds and three from medical emergencies. At least 52 people were arrested.