Cole Tomas Allen, 31, opened fire at the White House Correspondents’ Association dinner in Washington, D.C., on Saturday night, sending President Donald Trump and senior administration officials fleeing the ballroom.
A Secret Service agent was shot but survived because a bulletproof vest absorbed the round. Allen was tackled, handcuffed and taken to a hospital for evaluation. He was not struck by gunfire and will be arraigned in federal court on Monday.
Authorities are expected to charge the California resident with using a firearm during a crime of violence and assault on a federal officer using a dangerous weapon. He could face other charges.
Investigators, family members and former colleagues have since described a man who appeared unremarkable until the attack. Officials and media reports have since revealed a detailed picture of the suspect.
Here are five key things to know.