(New Buffalo, MI) - Classes were canceled today at New Buffalo Middle School/High School in response to a threat posted on social media.

New Buffalo Area Schools Superintendent Dr. Jeff Leslie said the principal was notified by the F.B.I. this morning about a threatening post on Twitter from a high school student.

Initially, the school operated under two-hour delay to allow bomb-sniffing dogs to scour the building. The school was then canceled because it took a little longer than expected for the police to finish their work before declaring the building safe just before 10:30 a.m.

Leslie said no explosives were found.

The full nature of the post so far has not been revealed. The F.B.I. dealt with the student this morning, but he didn’t know if an arrest was involved. However, the student could face disciplinary action from the school system.

“We will enforce our handbook policies,” Leslie said.