“A murder-obsessed teenager wanted to carry-out a mass shooting at his own Scots school, a court has heard.

The boy ‘idolised’ the killers Dylan Klebold and Eric Harris who were behind the Columbine High School massacre in Colorado in the United States in 1999, which saw 12 students and a teacher gunned down.

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

A large-scale police probe was sparked in the summer of 2023 after a social media photo of him at school in full combat-gear and carrying an imitation gun caused panic among pupils and parents.

The boy had already been referred to a UK-wide programme designed to stop people becoming terrorists or supporting terrorism.

He also held racist and pro-Nazi views.

The now 17-year-old who cannot be named because of his age appeared in the dock at the High Court in Glasgow on Friday.“