Watch: Cassie details violent relationship with Diddy at trial

Casandra Ventura, Sean "Diddy" Combs' ex-girlfriend, took the stand on Tuesday in his sex trafficking trial in New York.

In emotional testimony, the singer said she was forced to participate in Combs' "freak-off" sex parties.

The BBC's Senior North America Correspondent John Sudworth lays out the key points in Cassie's testimony.

Read more on her evidence here.