Leaked footage obtained from a staffer of US Senator John McCain shows the making of an ISIL “execution” video similar to the videos portraying the beheading of James Foley and other victims.

In the three-and-a-half minute video, ISIL executioner Jihadi John (aka Mohammed Emwazi) can be seen standing in front of a green screen, beside a kneeling hostage wearing an orange jumpsuit and a green screen hood in a fully equipped studio in the presence of a production crew, the Leaksource website recently reported.

The desert style set and wind machine effects, share similarities to the beheading videos ISIL released of Steven Sotloff, David Haines, and Alan Henning.

The following is an example showing the similarities between the leaked footage and Foley’s alleged beheading.

According to the report, the video was obtained in Ukraine from the cellphone of a member of McCain’s staff by the Hactivist group, CyberBerkut.

“Dear Senator McCain! We recommend you next time in foreign travel, and especially on the territory of Ukraine, not to take confidential documents.

On one of the devices of your colleagues, we found a lot of interesting things. Something we decided to put: this video should become the property of the international community!” the group is quoted as saying in the report.

MacCain’s ironic response to the claims can be seen below.

According to British forensic experts, Foley’s execution was probably staged with the use of “camera trickery and slick post-production techniques.”

A terrorism expert stated that the videos of Japanese hostages Kenji Goto and Haruna Yukawa was probably taken in an indoor studio.

The ISIL video purporting to show the execution of 21 Egyptian Coptic Christians on a beach in Libya is also fake, said Hollywood horror film director Mary Lambert.

“In the opening shot all the figures might be animated. They never had more than six men on the beach… The close-ups of jihadists on the beach are most likely green screen… The sea turning red is obviously FX,” she said.