Embattled FBI deputy director Dan Bongino revealed he has discovered matters that have 'shocked me down to my core' during his time in office.

Bongino shared a cryptic message to his social media in which he vowed to uncover 'the truth' amid mounting criticism of his handling of the Epstein files.

He added: 'We cannot run a Republic like this. I’ll never be the same after learning what I’ve learned.

'We are going to conduct these righteous and proper investigations by the book and in accordance with the law. We are going to get the answers WE ALL DESERVE.

'As with any investigation, I cannot predict where it will land, but I can promise you an honest and dignified effort at truth. Not “my truth,” or “your truth,” but THE TRUTH.'