Three Scottish teenagers have been charged in connection with a series of hoax bomb threats at schools in five countries.

The trio, aged between 15 and 17, called in fraudulent claims regarding explosives and active shooters at high schools in Scotland, England, the Netherlands, the United States and Canada.

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The threats forced one school in Edmonton to initiate its ‘lockdown procedure,’ causing panicked pupils to leave the building in -20C conditions and Glenrothes High School in Fife to evacuate their premises in December last year.

Canadian police launched a joint probe into the calls, made using an app, with officers in Scotland and the US after one report the caller spoke with a ‘British accent’.

The youngsters, from Dundee, Glenrothes and Musselburgh, have now been arrested in connection with the threats and reported to the procurator fiscal.

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A spokeswoman for Police Scotland said: "Police Scotland has arrested and charged three males, aged 15 to 17, from Dundee, Musselburgh and Glenrothes in connection with hoax threats made to premises in the UK, USA, Canada and Netherlands in December 2018 and February 2019.”

She added: “The teenagers will be reported to the Procurator Fiscal."