Sean “Diddy” Combs’ ex-girlfriend, Cassie Ventura, began what could be a days-long testimony in Combs’ sex trafficking trial Tuesday, alleging on the witness stand Combs had subjected her to physical abuse and coerced her to participate in “freak off” sex performances. (Here is a complete list of the allegations against Combs).

Ventura is the prosecution’s star witness, and her testimony Tuesday and Wednesday alleging her ex-boyfriend Combs physically and sexually abused her is key to the charges against the hip-hop mogul.

jurors are shown a picture of what Cassie Ventura described as bruises from Sean "Diddy" Combs at his sex trafficking trial on Wednesday in this courtroom sketch.