Como se diz "Delação Premiada" em inglês?

Delação premiada (processo penal) state's evidence [Black's Law Dictionary 8th edition, page 599]. 

- Fazer delação premiada - to turn state's evidence. 

Exemplo: After hours of intense negotiations, the suspect accepted a plea bargain and agreed to turn state's evidence" [Black's Law Dictionary 8th edition, page 1555]. 

- acusado disposto a participar de delação premiada - immunity seeker. 

Exemplo: Aided by the assistance of a successful immunity seeker, the Justice Department in 1998 announced that two members of a vitamin producers' cartel would pay a total of $ 725 million to settle criminal Sherman Act charges". [Gelhorn, Ernest. Antitrust Law and Economics, p. VII] 

Delator (dir. penal) informer

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