Syrian opposition sources say a laptop seized from ISIL Takfiri terrorists contains a series of secret plans including hints at biological attacks.
The laptop was recovered during a raid on an ISIL hideout in Idlib Province close to Turkey's border.
A commander in a rival anti-government group in Syria has told American magazine, Foreign Policy, that the computer belonging to a Tunisian militant, contained thousands of secret files in French, English, and Arabic.
It also contained lessons on disguise, bomb-making, stealing cars as well as ideological justifications for militancy, the commander added.
Western media reports say one of the documents included instructions on how to develop biological weapons and how to weaponize the bubonic plague from infected animals.
The laptop also includes a 26-page fatwa (decree) by ISIL terrorist leaders on the use of weapons of mass destruction.