Cash-strapped ISIS 'killing its own fighters to sell their organs on the black market

ISIS has been killing its injured fighters so there organs can be extracted and sold on the black market abroad, it has been claimed.
Doctors in Iraq say they have been threatened by fighters to remove the organs from wounded militants.It is believed they then sell the organs abroad to raise money .
A report by an unnamed source in the al-Sabah newspaper said:

"Doctors were threatened to take out the body organs of a wounded ISIL militant,' the report said.

As reported by Fars News, it is also believed that prisoners held by ISIS have been forced to give blood to the terror group.