BRIT ISIS killer El Shafee Elsheikh – known as Jihadi Ringo – is rotting in a US hellhole jail, banged up 23 hours a day in a concrete box he's desperate to flee.

The 37-year-old, part of the sick ISIS Beatles execution gang , is caged in a concrete cell just 87sq ft in size inside ADX Florence, Colorado – the fortress nicknamed the “Alcatraz of the Rockies”.

In the hopes of leaving the supermax prison , he has launched a bid to be transferred back to the UK — sparking fury from victims’ families.

Bethany Haines, whose aid worker dad David was butchered by the gang, blasted: “The idea someone this evil could be back in a British prison makes my skin crawl.”

LIFE INSIDE SUPERMAX

Elsheikh’s world is four concrete walls, a steel door, and a slit of a window.

Inmates eat alone in t

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