The lockdown was put in place after the school received two phone calls from an individual indicating threats to student safety just before 1 p.m. on Wednesday, April 26.
At the time, Superintendent Armand Pires reassured families that all students and staff were safe inside their classrooms and that information was limited. However, Pires later revealed that the lockdown was sparked by threats that were made against the school.
"We know that this is unsettling and promise that we will keep you apprised," Pires said in a statement. "Our student and staff safety is our primary concern."
Medway Police got to the school just before 3 p.m. and conducted a search. Officers determined that the school was safe and staff started letting students out early, officials said.
The school also canceled all after school activities as an extra precaution. All students were dismissed just before 3:30 p.m., according to a separate Tweet from Medway Schools.
Investigators later determined that the threats were not credible. Class is expected to resume normally on Thursday but Medway Police will have an increased presence as an extra precaution.
The incident remains under investigation.
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