The mass graves where ISIS may have buried British and other western hostages it publicly murdered have been found.
The new claims have been revealed by a US-based Syrian research team in the wake of the 'Beatles' trial, the British jihadist group that played a pivotal role in the hostage-taking.
Alexanda Kotey, also known as Jihadi George and El Shafee Elsheikh, Jihadi Ringo, are both serving life terms in the US.
