The Islamic State militant group released a video on Tuesday suggesting it may carry out further attacks in the West, naming London, Berlin and Rome as possible targets.
Rising terrorism: Suicide bomber kills five in Istanbul
"If it was Paris yesterday, and today Brussels, Allah knows where it will be tomorrow. Maybe it will be in London or Berlin or Rome," said a member of the group in English on the video which showed footage of the aftermath of previous attacks.
Islamic State number two killed in US raid in Syria
Earlier, Islamic State militants attacked Syrian army troops with mustard gas in an offensive against a Syrian military airport in the eastern province of Deir al-Zor that borders Iraq, state media said on late Monday.
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