Rep Steve Scalise (R.-La.) was among at least five people shot at an Alexandria, Va., baseball field as Republican members of Congress were practicing for an upcoming bipartisan congressional game. According to MSNBC, Scalise was shot in the hip and is in stable condition.
Five people were transported medically from the scene in Alexandria, the city's police chief, Michael Brown told reporters. Two of the wounded were Capitol Hill police who were at the scene, witnesses said.
The shooter appeared to be a white male, "a little bit on the chubby side," Rep. Mo Brooks (R-Ala.) told CNN, adding that he only saw the man for second.
Brooks said he heard 10 to 20 rounds from the gunman's rifle before the security detail returned fire. He said there were 20 to 25 members of team at the practice when the gunfire erupted.
President Donald Trump said he and Vice President Mike Pence were aware of the shooting 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," Trump said in a statement.
Rep. Ruben Kihuen (D-Nev.) tweeted support from congressional Democrats also assembled for practice.
This story is developing. We will update as details become available.
Reuters reporting contributed to this story.