a scathing new accusation shed light on alleged fail thursday may have worsened the january 6th insurrection. an nonious whistle-blower who identifies as a former high-ranking capitol police official says department leadership withheld vital intelligence and didn't act once the violence began. cnn's whitney wild is tracking this for us. whitney, what can you tell us about these really disturbing allegations. >> well, this left is extremely detailed. it's 16 pages. it was first reported by police coast guard, and it makes two major claims here, and it claims that two of the top u.s. capitol police officers failed to act on january 6th as the violence unfolded. the letter also says that former acting chief pitman lied to congress earlier this year. the whistle-blower says in the letter they are, again, a former high-rank officer with 31 years at the capitol police department. this person came forward because assistant -- now assistant chief