ISIS leader to appoint his deputy

ISIS leader Abu Bakr al-Baghdadi has privately revealed he fears he will be killed in Mosul and has appointed his first deputy to take over when he dies. 

A source, who insisted on anonymity, said the terror group's media networks had been circulating the 'unprecedented' decision. 

The identity of the potential future leader will be kept under wraps amid fears it could cause revolts within ISIS, the Daily Mail reports.