Prosecutors plan to call one of their final witnesses in Sean “Diddy” Combs’s federal racketeering and sex trafficking trial on Friday: a former assistant to the music producer who has been granted immunity for testimony that could shed light on the operations of Combs’s inner circle.

Jane” is the pseudonym of an alleged sex trafficking victim of Combs, who testified the rap mogul forced her to participate in sex performances similar to the “freak-offs” Cassie Ventura previously described.