Capitol Police Officer Howard Liebengood may have committed The AP news agency quoted its sources as saying.
It is emphasized that on Sunday, U.S. authorities announced the death of 51-year-old police officer, without giving reasons for what happened.
The agency did not specify whether the Capitol Police officer’s death was related to the storming of the building.
Liebengood had worked for the force since 2005. Prior to that, his father worked there.
On Jan. 6, sitting U.S. President Donald Trump called on supporters at a rally in Washington to march to the Capitol to “help weak Republicans” challenge the election results. A crowd of Trump supporters besieged the Capitol, stormed into the building and interrupted a joint session of Congress where Joe Biden’s presidential victory was being asserted.
Five people were killed as a result. Democrats in Congress intend to impeach Trump in the House on charges of inciting violence and disorder.