Pro-ISIS messages painted on rock at Youngstown State University

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Authorities are investigating after several Islamic State group images appeared on a rock on the Youngstown State University campus overnight.

According to WFMJ, Youngstown State University police have been notified. Police say the messages contained threats and the case is being taken seriously. School officials say the FBI has been contacted, as well.

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School officials say no threats have been validated at this time.

Photos posted on social media show the following messages:

• "France deserves destruction"
• "YSU supports ISIS"
• "We are coming for you"