A primary school caretaker has been jailed for at least five years for carrying out a nationwide letter bomb campaign which injured eight people.
Cooper mailed bombs in 'protest'Miles Cooper, 27, from Cambridge, was told at Oxford Crown Court that his sentence was indeterminate.
He was found guilty by a jury yesterday of 11 charges relating to explosive devices he sent to offices in London, Berkshire, Oxfordshire, Kent, Birmingham and Swansea in January and February.
People who opened Cooper's padded envelopes were showered in glass fragments or nails, his four-day trial heard.
Cooper said he sent the seven letters, five of which exploded, in protest at Britain's "authoritarian" Government.
Sentencing Cooper, the judge described him as a terrorist.
Outside court, Detective Superintendent George Turner said: "He utilised his interest in anarchy, terrorism and explosive devices to support his political views."
He added: "His victims were innocent people who went to work to earn a living and returned home having been mentally and physically scarred - some for life - by his actions
