The Edmonton Police Service is investigating an online threat made against an administrative staff member at Harry Ainlay High School Wednesday morning.
Police said shortly after 11 a.m., the school was placed under lock down as a precaution.
A suspect was later arrested and the lock down was lifted.
Anyone with information about this incident or the individual(s) responsible is asked to contact Edmonton police at 780-423-4567.
Students are linking the lockdown to a bizarre Instagram account on which images of clowns and veiled threats like “you’ll be the first to die” and “killing is an act of mercy” were posted Wednesday. The user of the account goes by the name “The Arbiter” and claims to attend Harry Ainlay.
However, police have not referred to the Instagram account or confirmed any link between it and the lockdown.
Also on Wednesday, RCMP in Wood Buffalo identified the person responsible for sending a kidnapping threat on Instagram.
Mounties said a female youth was behind the threat but charges had not been laid.
A day earlier, four people were arrested in Fort McMurray after an investigation into threats of kidnapping “involving students from different schools.”
-With files from Phil Heidenreich.