A loner schoolboy who caused widespread panic by launching a terrifying nationwide bomb hoax campaign from his bedroom has been jailed for three years.

George Duke-Cohan, who was sentenced at Luton Crown Court on Friday, sent thousands of emails to schools, colleges and nurseries across the UK and America warning that bombs had been planted in classrooms.

The court had heard that Duke-Cohan 19, from Watford in Herts, had been bullied at school and was said to love the "notoriety" and attention he was gaining among the online hacking community.

The teenager's hoax bomb threats caused 400 schools in the UK to be evacuated and a trans-Atlantic plane to be quarantined.

Duke-Cohan was arrested days after his threats. Weeks later, while still under investigation, he sent a mass email to schools in the UK and the US, claiming that pipe bombs had been planted on their premises.