Overview
- The suspect wore a tactical vest and gloves and carried extra shotgun rounds, authorities said.
- Officers recovered a Kevlar helmet and a gas mask from a white Mercedes SUV parked nearby.
- Chief Michael Sullivan said the 18-year-old is not from the area, was not previously known to police, and the vehicle was not registered to him.
- The West Front area was briefly closed on Maryland Avenue during the response, then reopened after an all-clear.
- Investigators are working to determine a motive as the incident occurs against a documented rise in threats to Congress reported in 2025.