A bomb threat forced a two-hour delay to the start of classes Monday at Walter G. O’Connell High School in Copiague, school officials said.

In a text to district students and parents, district Superintendent Kathleen Bannon said the threat was “emailed to high school administration” about 3:30 a.m. — and that the Suffolk County Police Department was immediately notified.

She wrote that the building had been “determined safe” and said “there was no evidence to substantiate a threat.”

Police confirmed there were officers at the school Monday, saying they had been notified of the threat by a school administrator about 5:50 a.m. In a statement Monday, police said officers “assisted school officials with a search of the school.”

No threat was found, police said, adding that First Squad detectives are investigating.

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