A man was taken to hospital and four men were arrested following a knife attack outside a Sheffield city centre music venue.
The fight broke out outside the Rocking Chair on Furnival Gate, after a gig on Saturday night.
A South Yorkshire Police spokeswoman said the disturbance involved two groups of men and happened at about 11pm.
She said: “One man suffered head injuries and was taken to hospital. It is believed he suffered a knife wound. “His injuries are not thought to be life threatening. Four men were arrested at the scene and enquiries are ongoing.”