The police have swarmed the Gammel Lindholm public school in Nørresundby outside Aalborg after an unidentified person threatened to kill its students, according to Ekstra Bladet tabloid.
The threat was recieved via phone call this morning at around 10 am, and the police are now heavily present at the school. Henrik Skals, the deputy inspector with the north-Jutland Police, said that no-one had been hurt and a massive police investigation was underway.
"We have an idea about who the perpetrator is, and we are investigating along those lines," Skals told Ekstra Bladet.
The students are still at the school and the police have urged parents not to come to the school.