Police are appealing for witnesses after a man received a fractured skull following an argument.
Two people have been arrested following the row, which took place in Tilgate Parade, Crawley, in the early hours of Saturday May 10.
A spokesman for Sussex Police said the victim, aged 22, who lived locally, had been at the ‘Bringing it Back’ dance event in the Grasshopper Pub, Tilgate, on Friday May 9.
He left the event around 1am on Saturday and walked along the parade with two friends.
As the group reached the Co-op shop at the end of the parade, they became involved in an argument with another man.
The spokesman said: “The 22 year-old ended up on the ground and he and his two friends were treated at East Surrey Hospital for cuts and bruises.
“However some days later it became clear that the 22-year old had also suffered a fractured skull and he was re-admitted to hospital where he is still receiving treatment, although his injury is not life-threatening.”
A 36-year old local man has been arrested on suspicion of causing grievous bodily harm and a 34-year old local woman has been arrested on suspicion of causing actual bodily harm.
After being interviewed both were released on police bail until 13 August while enquiries continue.
Detective Constable John Hord said “The ‘Bringing it Back’ event was well attended and this incident would have happened shortly after people began to leave the Grasshopper. I am keen to speak with anyone who was on the parade and heard a disturbance or saw an incident outside the Co-op around 1am.
“If you have any information, please call us on 101 or email firstname.lastname@example.org quoting serial 0072 of 10/5.
“You can also give information anonymously through the independent charity Crimestoppers by calling 0800 555 111.”