Dartmoor Prison murder: Inmate found guilty of stabbing
A convicted killer has been found guilty of stabbing a fellow prisoner to death with a prison issue kitchen knife.
William Tolcher, 51, denied attacking Alex Cusworth, 37, with the 10in (23cm) knife at Dartmoor Prison last November.
A jury at Plymouth Crown Court found him guilty of murder and he is due to be sentenced on Friday.
Tolcher, from Liverpool, is serving a life sentence for the murder of a woman in Newquay, Cornwall, in 1996.
Mr Cusworth suffered internal bleeding after the attack and died at Derriford Hospital in Plymouth.
Judge James Dingemens said he was considering a minimum 30-year jail sentence.
Tolcher was convicted of murdering a woman in Newquay, Cornwall, in 1996 and was already serving a life sentence.