He attacked two students and teacher
A teenager at a Devon public school has been found guilty of three attempted murders.
The 17-year-old repeatedly hit his roommates as they slept at a boarding house at Blundell's School in Tiverton.
Both boys suffered skull fractures, as well as injuries to their ribs, spleen, a punctured lung and internal bleeding.
Maths teacher Henry Roffe-Silvester was asleep in his own room when he was awoken by noises coming from the boarding house and went to investigate.
He told a jury he saw a silhouetted figure standing in front of him in the room who then turned and repeatedly hit him with a hammer.
The teenager, who was 16 at the time, admitted carrying out the attacks but said he was sleepwalking at the time and denied three charges of attempted murder on the basis he was not guilty by reason of insanity.
The court was told he had an obsession with the killing of children and hammers, which he said he kept by his bed for "protection" from the "zombie apocalypse".
He will stay in custody until he is sentenced in October.
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