Thames Valley Police is currently at the scene of an unexplained death in Aylesbury.
Officers were called to a property in Belgrave Road at 10.43pm.
A man was found deceased within the property. His death is currently being treated as suspicious.
There is a scene watch in place on the road, which is likely to remain for much of the day and may cause access to the Thomas Hickman school to be disrupted.
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The 22 year old man is seriously injured in hospital. Police believe a baseball bat and iron bar may have been used in the attack