"Killer clowns" are an Internet fantasy, Chicago Police said Tuesday. View Full Caption Shutterstock

PORTAGE PARK — A threat on social media against a Far Northwest Side school involving killer clowns is unfounded, Chicago Police said Tuesday.

The threat — deemed not "viable" — was made on social media against a school, according to a statement from the Chicago Police Department.

Police officials referred all questions about the matter to Chicago Public Schools officials, who did not immediately respond to questions about what the nature of the threat was and what school was mentioned.

On Twitter, representatives of the Grand Central Police District called the reports of "killer clowns" sweeping the nation an "internet fantasy."

There are no credible threats to any school right now. The Killer Clowns are internet fantasy, nothing more. — ChicagoCAPS25 (@ChicagoCAPS25) October 4, 2016

Teens in Philadelphia and New Jersey have been arrested for making threats involving clowns and violence at schools, according to reports.

The reports of threatening, scary clowns began in late August in rural South Carolina, and spread to Alabama, Florida, Kentucky, Pennsylvania, North Carolina, New York and a handful of other states.

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