A man sustained serious injuries following an incident, which took place near Mansfield Market Place, in the early hours of this morning (Saturday).
Officers believe the incident happened at around 3.15am in Leeming Street. The victim was taken to The Queen’s Medical Centre.
DI Phil Sims said: “This incident has left a man suffering serious head injuries. We need to find out how this happened. If you saw anything please get in touch.”
If you have information phone Nottinghamshire Police on 101.