A second man has been arrested in connection with the death of a man who was discovered in Wooburn Common.
The 36-year-old man from West London is custody at Aylesbury police station.
A 32-year-old man, also from West London, who was arrested on suspicion of murder yesterday remains in custody at this time.
Pheasant beaters discovered the body of 44-year-old Ryszard Karpuc from West Ealing, London, on Saturday.
His death is still being treated as unexplained.
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The crash, which took place at about 7am today (Thursday), involved three vehicles. One man sadly died as a result of the collision and his next of kin have been informed.