Steve Scalise, the majority whip of the House of Representatives, was shot at a baseball field in Alexandria, Va., when a gunman opened fire near a Y.M.C.A. on Wednesday morning, a congressional official said on Wednesday.
Representative Mo Brooks told CNN that “at least five” people were injured — including two law enforcement officers and a congressional aide — while members of a Republican congressional baseball team were practicing.
President Trump said in a statement that he and the vice president were monitoring developments closely.
“We are deeply saddened by this tragedy,” he said. “Our thoughts and prayers are with the members of Congress, their staffs, Capitol Police, first responders, and all others affected.”
Mr. Brooks described a scene of chaos and of players taking cover wherever they could on the field.
He said that members of a security team exchanged gunfire with the gunman, who was armed with a rifle. The gunman said nothing as he opened fire, Mr. Brooks said. About 50 shots were fired, congressional sources said.
He said he went to the aid of one of the victims and used his belt as a tourniquet to help stop the bleeding from a gunshot to his leg. He said it was about two to five minutes before other officers arrived.
“My adrenaline is raging,” he told CNN. “It’s not easy to take when you see people around you being shot and you don’t have a weapon yourself.”
Mr. Scalise, a self-described strong conservative leader, represents the First Congressional District of Louisiana, which extends from the New Orleans suburbs.
Mr. Brooks said Mr. Scalise was shot in the hip and was at second base and dragging himself into the outfield to get away from the gunman.
“There is not a whole lot you can do,” he said. “It was emotionally distressing to know the position he was in.”
He said the security officers were “screaming for reinforcements” and “it seemed like forever, but it was probably shorter than it was.”
Joseph Miscavige, who was at the Y.M.C.A. at the time of the shooting, said he saw victims being taken away by ambulances.
The Alexandria Police Department confirmed it was investigating a shooting and that an unspecified number of victims had been transported to hospitals.
The police said on Twitter that a suspect was in custody.