A post-mortem examination has revealed that a man who was found seriously injured in Bilborough died from a gunshot wound.
The victim, who has not yet been formally identified, was taken to the Queen's Medical Centre in Nottingham but later died.
A 32-year-old man has been arrested on suspicion of murder.
Inquiries are ongoing to establish what happened.
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Nottinghamshire Police has charged a 23-year-old man with murder following the death of a 16-year-old girl.
Derby County defender Jake Buxton has today joined fellow Championship side Wigan Athletic for an undisclosed fee.
Rain overnight, clearing Wednesday morning. Showers possible by the afternoon.