Update to this story.
Via Fox News:
Authorities responded Saturday to reports of shots fired on the West Front of the U.S. Capitol Building, prompting the entire building to be placed on lockdown.
The lockdown lasted almost two hours as police investigated the shooting, which was later confirmed to be a suicide. Officials ordered the precautionary lockdown after reporting the shooter had been “neutralized” and as police checked a suspicious package connected to the shooting.
Fox News confirmed the shooter died of a self-inflicted gunshot wound. The gunman killed himself just before 2 p.m.
Sources familiar with the situation told Fox News the shooter shot themselves in the head. It was unclear what weapon they used.