Federal prosecutors say the hip-hop mogul coerced multiple women to participate in "freak offs," drug-fueled sex encounters that lasted for days.

Prosecutors are aiming to fill in the picture of the mogul’s relationship with Casandra Ventura by questioning his former assistant and Ms. Ventura’s mother.

Combs’s lawyers have argued that the government has twisted consensual sex with long-term girlfriends into serious federal charges.