Myths that particularly rile prison officials are reports that Supermax, southwest of Colorado Springs, is a dungeon where inmates are cast aside to rot and die, and that the prison is underground, which it obviously is not.

CNN: Reporters get first look inside mysterious Supermax prison

Mr Cortiglia has pledged to introduce free weekend travel on the Underground and a minimum five-year prison sentence for knife crime if elected mayor on 3 May.

BBC: UK Politics