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ISIS has reportedly trained 400 fighters to attack Europe in deadly waves

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PARIS – The Islamic State group has trained 400 of its members and sent them to Europe to unleash waves of bloody attacks, security officials told the Associated Press.

The fighters have been instructed to strike when they determine the best time, place and method, the sources said.

The ominous report comes on the heels of a deadly terror attack in Brussels that left 31 dead and 270 injured, according to officials.

The Islamic State claimed responsibility for the two blasts that ripped through a Brussels airport and subway station. Belgian authorities are on high alert and in search of one suspect in the attacks.

Two brothers, both suicide bombers, died in the blasts. Officials believe one of the suicide bombers was the bombmaker behind the November Paris attacks.