The former U.S. Capitol Police chief said he only learned this week that his officers were warned hours before the January 6 riot that extremists could commit a “war” to Washington that day.
Steven Sund was testifying in Congress at the first public hearing on the last month siege which saw dozens of Donald Trump supporters storm the Capitol building to interrupt confirmation of his presidential defeat to Joe Biden.
The FBI Washington bureau chief said that once he received the Jan. 5 warning from the Virginia office, the information was quickly shared with other law enforcement agencies through the joint task force on terrorism, including the Capitol Police.
Mr Sund said an officer from the Joint Terrorism Task Force received the FBI note and forwarded it to a sergeant working on intelligence for the Capitol Police, but the information was not passed on to no other supervisor.
Mr Sund said he was not aware of the report, but added that he saw an intelligence report created within the Capitol Police warning that Congress could be targeted on January 6.
This report warned that extremists were likely to participate and calls were made for people to come to Washington armed.
In addition, a senior security official said he was “stunned” by the late response to a request for help from the National Guard during the mob riot on Capitol Hill.
Acting Metropolitan Police Chief Robert Contee III told the joint Senate hearing that the former chief of police was “begging” army officials to deploy Guard troops amid the violence escalated rapidly.
District of Columbia Metropolitan Police officers had joined in assisting the United States Capitol Police in the attack.
Mr Contee said officers “were literally fighting for their lives”, but appeals officials appeared to go through a “tick the boxes” exercise.
He said there was “no immediate response”.
Mr Sund, and several other senior officers, resigned following the violence that sparked Mr. Trump’s second impeachment trial.