A pathologist examined David Clarke's body after a retired man saw it in the River Foss early on April 18, 2007, while out walking his dog.
The pathologist told the first inquest held into the death that the circumstances were consistent with Mr Clarke having drowned and that the alcohol he had drunk that evening had contributed to his death.
That inquest, held in 2008, recorded an open verdict.
Twelve years later, a jury convicted David Roustoby, now 48, of murdering Mr Clarke, who was 43 when he died. They heard Mr Clarke had been strangled.
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