Gardai are probing an online threat by an unknown person to "shoot up" an Irish school.
It was issued on Snapchat on Wednesday morning and caused panic and fear among the 1,000 plus pupils at St Oliver's Community School, Drogheda, Co Louth.
The grim warning spread like wildfire online. It said: "Spread the word, tomorrow at 11.02 I will be up at Oliver's Drogheda and I'm going to put bullets in everyone's heads."