Officers were called to a report of a sudden death of a man in the Pleasley area in the early hours of this morning.
He was found dead in a car in Woburn Road, Radmanthwaite, at around 1.40am today (Tuesday 15 January).
Enquiries are continuing but the death is currently being treated as unexplained.
Officers are keen to establish the movements of the car, a silver Nissan X-Trail registration N22OWL, yesterday (14 January) afternoon or evening.
Anyone with information is urged to call Nottinghamshire Police on 101, quoting incident number 38 of 15 January 2019, or Crimestoppers anonymously on 0800 555 111.