Imran Hussain has been found guilty of murdering stranger, 18 year old Keiran Crump Raiswell, on a street in Manchester earlier this year.
Hussain claimed he was hearing voices before stabbing the teenager. He'd driven 100 miles to randomly murder.
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Officers are treating the incident as a suspected arson attack and are currently reviewing CCTV footage.
Forecast details from Philipa Drew:
Rail services on routes operated by Northern are to be brought under public control on 1 March.