The video released on Saturday called on supporters to murder police, soldiers, intelligence members and civilians in the U.S.
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As world leaders gather in Paris to mourn the victims of the Charlie Hebdo massacre, police in New York City have been placed on high alert for a possible ISIS attack.

The NYPD have been warned to look out for jihadi attacks after the terrorist group released a call to attack American police officers, soldiers, intelligence officers and civilians in a social media video on Saturday.