Authorities have identified Cole Tomas Allen, a 31-year-old man from California, as the suspect in the shooting at the White House Correspondents' Dinner.
The incident occurred on Saturday night at the Washington Hilton, where Donald Trump and Melania Trump were escorted off the stage amid the chaos.
Allen was taken into custody shortly after shots were fired, and the FBI confirmed the arrest.
President Trump wrote on Truth Social that the shooter has been 'apprehended.'
Video footage circulating online shows a man lying on the ground surrounded by US Secret Service agents, believed to be the suspect as he was taken into custody.
CNN's Wolf Blitzer described being just feet away from the shooter during the incident and recalled being forced to the ground by a police officer.