Bomb by Islamic State likely caused Russian plane crash: security sources

Evidence now suggests that a bomb planted by the Islamic State militant group is the likely cause of last weekend's crash of a Russian airliner over Egypt's Sinai peninsula, U.S. and European security sources said on Wednesday. Islamic State, which controls swathes of Iraq and Syria and is battling the Egyptian army in the Sinai Peninsula, said again on Wednesday it brought down the airplane, adding it would eventually tell the world how it carried out the attack.

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