06/27/2016 06:39 EDT | Updated 06/28/2017 01:12 EDT

Threats force school closure, grad ceremony postponement in southeastern B.C.

NELSON, B.C. — A high school in southeastern B.C. remains closed Monday as officials investigate a threat.

Posts on the website of Mount Sentinel Secondary in South Slocan, about 25 kilometres west of Nelson, confirm a threat to the safety of students and staff was received last week.

Officials decided to shut down the school and also postponed graduation ceremonies set for the weekend.

An update posted Sunday and attributed to Mount Sentinel vice-principal Shellie Maloff says the RCMP, Nelson Police, the Ministry of Children and Family Development and the school district's Violent Threat Assessment Team are investigating.

The post urges parents and students to "continue to be vigilant" if attending any grad activities, parties or events where students might congregate.

School officials hope Mount Sentinel can reopen Tuesday and say other schools in the Slocan Valley are not affected by the threat and are open for the final week of classes before summer break.

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