Police are appealing for information after a man was assaulted at the Paul Weller concert at Sherwood Pines at the weekend.
The incident happened at around 8pm on Saturday 14th June at the Clipstone Road park, in Edwinstowe.
The 52-year-old victim was with friends in the crowd when someone head-butted him to the face, leaving him with cuts and bruises.
A 51-year-old man was arrested on suspicion of assault. He has been bailed pending further enquiries, a police spokesman said.
If you saw the attack, or have any information, contact police or call Crimestoppers anonymously.