Islamic State of Iraq and Syria (ISIS) has posted a document detailing the group's plans to use birds as suicide bombers to blow up jets.
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According to The Daily Star, the ISIS supporter who posted the document online claims a Urea bomb could be strapped to a bird and triggered remotely to cause maximum devastation.
The terror document alleged that the highly dangerous explosive was used to bring down Metrojet Flight 9268 before it crashed in Egypt's Sinai Peninsula, killing all 224 people on board earlier this year.
He said that the Crusader and Shiite airstrikes are the biggest military obstacle to the soldiers of the caliphate and dealing with it is a big challenge.