Sean "Diddy" Combs has been breaking prison rules by contacting potential witnesses in his upcoming sex trafficking trial, prosecutors have alleged.

The music mogul is accused of making "relentless efforts" to "corruptly influence witness testimony", by using other inmates' telephone accounts and using three-way calls to speak to people who are not on his approved contacts list.

Prosecutors said a review of recorded calls also found that Mr Combs instructed his family to contact potential witnesses in his case, they said in a court filing.

Mr Combs, 55, is currently in custody in Manhattan.