A top House Republican, Steve Scalise of Louisiana, was shot by a rifle-wielding gunman Wednesday at a congressional baseball practice just outside of Washington. Several other people were also believed to have been hit, according to a lawmaker who witnessed the shooting.

Capitol Police said officers who were part of Scalise’s security detail returned fire and wounded the shooter, who was taken into custody.

Scalise, the House majority whip, was in stable condition at George Washington University Hospital, according to one congressional aide. His injuries were not believed to be life-threatening. It was not known the condition of the others who were shot.

President Donald Trump said he was “deeply saddened by this tragedy” and was monitoring developments.

“The Vice President and I are aware of the shooting incident in Virginia and are monitoring developments closely. We are deeply saddened by this tragedy. Our thoughts and prayers are with the members of Congress, their staffs, Capitol Police, first responders, and all others affected.”

The shooting occurred at a baseball field in Alexandria, Virginia, where lawmakers and others were gathered for a morning practice. Alexandria police said a suspect was taken into custody and “not a threat.”