A man and woman were attacked at a beer festival in Dronfield, police have revealed.
Officers were called to the Green Dragon on Church Street at 11.30pm on Saturday and found the pair on the pavement outside.
They had both suffered minor injuries in the attack.
A 54-year-old man and 52-year-old woman were arrested over the incident.
Both have since been released on bail pending further enquiries.
Anyone with information should call Detective Sergeant Mark Church or Detective Constable Dean Tidd at Derbyshire Police on 101 or Crimestoppers 0800 555111.