Detectives are appealing for witnesses after a man was assaulted in Alfreton.
At around 5pm on September 29, a fight took place in Meadow Lane between a group of men in their 20s.
A 22-year-old man suffered hand injuries and was taken to Kings Mill Hospital for treatment.
Four men have been arrested in connection with the assault, questioned and released on bail while the investigation continues.
Anyone with information should call police on 101 or Crimestoppers on 0800 555 111.