Detectives are appealing for witnesses to an assault in Creswell.
Police were called to a car park in Old School Lane around 2.15am on Sunday 30th June, following reports a 26-year-old man had collapsed.
He was taken to Bassetlaw Hospital and later told officers a man had punched him in the head when he was in the car park.
A 19-year-old man has been arrested on suspicion of assault, questioned and released on bail while inquiries continue.
Anyone with information should call Derbyshire Police on 101 or Crimestoppers annonymously on 0800 555 111.
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