Prison chiefs are investigating after footage was released of disgraced footballer Adam Johnson in jail.
The video, published by The Sun, apparently shows Johnson, 29, talking to other inmates at HMP Moorland about his child sex abuse case and victim.
The former Sunderland and England midfielder was jailed for six years in March 2016 for grooming and sexual activity with a 15-year-old girl.
A spokeswoman said: "An investigation is under way."
The Prison Service spokeswoman also said measures to "find and block illegal mobile phones" were being "stepped up".