Combs faces five federal charges of racketeering, sex trafficking and transportation to engage in prostitution, to which he has pleaded not guilty.

Sean "Diddy" Combs' lawyers will question R&B singer Casandra Ventura, known as Cassie, for the first time in his sex-trafficking trial Cassie is the prosecution's key witness and has testified graphic details of alleged sexual and physical abuse at the hands of Combs