A teenager who 'idolised' the killers behind the Columbine High School massacre and wanted to carry out a mass shooting at his own school has been locked up for six years.

Felix Winter was said to be obsessed with the deadly US shooting, which resulted in the murder of 13 students and a teacher during the tragic incident in Colorado in 1999.

He repeatedly spoke about doing the same at his own Edinburgh secondary school, describing the 'Doomsday' when he would 'clear it out'.

But a social media photograph of Winter in full combat-gear and carrying an imitation gun while at school caused panic among pupils and parents, and caught the attention of police in the summer of 2023.

Winter had already been referred to a UK-wide programme designed to stop individuals becoming terrorists or supporting terrorism.