MANCHESTER TOWNSHIP — All schools in an Ocean County township are closed Friday by threatening student comments on social media.

A threat made by a student Thursday morning was investigated and determined to not be credible by police, according to a message from Superintendent David Trethaway on the district website. In the afternoon additional statements appeared online involving other individuals who claimed to know about a threat against the high school .

Because there was not enough time for Manchester police to investigate the threats and speak with all the individuals involved Trethaway said the decision was made to cancel classes on Friday at all district schools.  No threats were made against any other school.

"We must take every step to assure the safety of all our students and staff and every statement must be taken seriously and investigated by police," according to Trethaway. "Any individual who makes a threat or communicates a false rumor on social media will face serious consequences from both the police and the school district and this is extremely dangerous."

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Trethaway did not disclose the nature of the threat.

An online threat Tuesday night against Howell High School led to the arrest of a student but no cancellation of classes. The student who Howell police said posted a picture of a rifle was found with an AirSoft rifle.

The threats came after a shooting Tuesday at a Michigan high school left four students dead and eight people wounded.

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