A Capitol Police officer accidentally discharged their firearm Tuesday morning in the Cannon House Office Building, three sources familiar with the matter said.

After Roll Call first reported the incident, the department confirmed the discharge.

“The Capitol Police’s Office of Professional Responsibility (OPR) is investigating the discharge of a USCP weapon inside a breakroom in the Cannon Office Building. The officer has been suspended while OPR investigates the incident,” USCP spokesman Tim Barber said in a statement.