Police have told a coroner that a Durham solicitor may have killed himself, although they admit the case remains a mystery.
CCTV showing him setting off for a run twenty minutes before he was found stabbed still remains the clearest image of his last movements.
At an inquest update today this morning Police told a coroner that the absence of any signs of a struggle or restraint on Mr Maine's body suggest his wounds might have been self inflicted.
But detailed searches have failed to find a knife.
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The ticket, which appears to be dated 19th August 1980, was found at Haymarket metro station.