GARDNER, MASS. (WHDH) - A “serious and credible” threat was made against Gardner High School Friday morning, according to school officials.

The school’s principal said appropriate actions were taken to ensure everyone’s safety, and the threat was fully addressed. The threat involved a minor and student discipline.

In a letter to families, the school’s principal said he cannot release any more information at this time.

No other details were immediately available.

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