Nova Scotia RCMP are at the scene of a high school on the South Shore after an apparent outside threat to the school.

Officers were called to Liverpool Regional High School shortly after noon on Thursday, said RCMP Cpl. Scott MacRae.

"Information was received by the school principal that there was a report of possibly a non-student coming to the school with weapons," he told CBC News.

"School authorities initiated a lockdown procedure with the students remaining in the school."

Trish Smith, a spokeswoman for the South Shore Regional School Board, said it was unclear whether the possible threat was against the school or a particular student.

She said the main doors of the school are locked and no one is being let in, but students are able to move through the building freely and go from classroom to classroom.

Smith said the school will remain secure for the remainder of the afternoon.

MacRae said officers have patrolled the area and no threat has been found.

"Police basically are doing what we have to do to determine the validity of the complaint or the threat and we will continue to work until we can determine whether that threat is real or not," he said.

"Our officers are working diligently to locate — there have been some names put forth — and we will be following up that investigation as we speak."

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