A Senate investigation of the Jan. 6 insurrection at the U.S. Capitol has uncovered broad government, military and law enforcement missteps surrounding the violent attack, including a breakdown within multiple intelligence agencies and a lack of training and preparation for Capitol Police officers who were quickly overwhelmed by the rioters.

The Senate report released Tuesday is the first — and could be the last — bipartisan review of how hundreds of former President Donald Trump’s supporters were able to violently push past security lines and break into the Capitol that day, interrupting the certification of President Joe Biden’s victory.

It includes new details about the police officers on the front lines who suffered chemical burns, brain injuries and broken bones and who told senators that they were left with no direction when command systems broke down. It recommends immediate changes to give the Capitol Police chief more authority, to provide better planning and equipment for law enforcement and to streamline intelligence gathering among federal agencies.

Read more: AP