The incident took place in Tolland County at E.O. Smith High School in Mansfield around 8 a.m. on Wednesday, March 29.
According to state police, a preliminary investigation indicates that a staff member at the school had received a telephone call from an unidentified source, who communicated a possible threat to the school.
Out of an abundance of caution, the school was evacuated while troopers investigated.
After conducting a thorough search of the school building, troopers determined that there was no credible threat to students, staff, or the public.
Troopers cleared the scene at approximately 10:35 a.m.
Police did not reveal what the threat entailed or any additional information.
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