He claimed that the confession had been 'extorted' (from him) by the police.
The criminals 'extorted' large sums of money from their victims.
He was arrested for 'extorting' bribes.
(..) There's no way you can prove that. I just talked to one of your clients, and when I told him that you couldn't extort him anymore, let's just say he was singing a different tune. You're bluffing; you're just trying to get me to confess. Bluffing? (..)2016 TvShow: Bones Title: The Fight in the Fixer Season: 11 Episode 15