A bomb threat forced the evacuation of Fredericton High School on Wednesday morning.
The school was cleared at about 10:30 a.m., after the discovery of a hand-written note that made specific threats.
Students and staff walked to nearby École Sainte-Anne while police combed the building.
Classes were eventually cancelled for the day, but are expected to resume as scheduled on Thursday.
The police investigation continues.
The explosive device unit, emergency response team, canine unit, RCMP and Fredericton fire department all responded to the scene.
Fredericton High School, located on Priestman Street, has nearly 1,900 students.