Police are appealing for help to find out more about the movements of John Roberts from Winlaton prior to his death.
The 32-year-old was found dead in Gateshead this morning with serious head injuries.
Police are asking for anyone with information to come forward.
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A man was threatened with a knife as he worked in a barber shop.
It comes after a weapon, known commonly as a BB gun was taken into a pub on Goodramgate in York on Friday 23, February.