WASHINGTON, D.C. — A lone gunman opened fire at the White House Correspondents' Association Dinner at the Washington Hilton on Saturday, prompting law enforcement to rush President Trump and Vice President JD Vance off the stage and out of the room. Other Cabinet officials and members of Congress took cover on the floor and under tables.

The suspect, identified as 31-year-old Cole Allen of Torrance, California, was armed with a shotgun, a handgun and multiple knives when he stormed the security checkpoint outside the dinner, according to law enforcement. Police believe he acted alone and do not currently believe other suspects were involved.

Trump, First Lady Melania Trump and Vance were not injured. One Secret Service agent was injured but was protected by a bulletproof vest, and law enforcement believe the agent was shot by the suspect.

Allen is expected to face two charges: using a firearm during a violent crime and assault on a federal officer using a dangerous weapon. He is expected to appear in court on Monday.

Acting Attorney General Todd Blanche said additional charges may follow as the investigation continues. Investigators believe the suspect was targeting Trump administration officials and are still examining his motivation and speaking with people who knew him. The suspect is not cooperating with investigators.

"We will not stop doing things like we did last night in this administration," Blanche said. "And this man, if one of his goals was to get us to be scared, he failed."

Blanche also addressed the broader response to the attack. "President Trump said last night, and he means it — and I very much agree with him — that this type of conduct will not deter him, it will not stop him from living. It will not stop him from doing his job. And not only him, but the vice president, the Cabinet, the law enforcement, you all journalists, you're not going to stop doing your jobs either because of this — this lone man that did what he did."

According to investigators, the suspect traveled by train from Los Angeles to Chicago and then from Chicago to Washington, D.C., and had checked into the Washington Hilton hotel within the last day or two. Law enforcement believe he purchased the firearms within the past couple of years.

Speaking to reporters after the incident, Trump called the presidency a "dangerous profession" and said he remained at the dinner after the shooting and added that the event would be rescheduled. "We're not going to let anybody take over our society. We're not going to cancel things out, because we can't do that," he said. Saturday's program was the first time Trump attended the dinner while in office.