A GROUP of around eight men assaulted three people in Guildhall Walk.
Now police have released this CCTV image in a bid to track down any witnesses to the attack.
It happened at around 2.10am on Sunday.
Around eight men assaulted three other men who were walking through Guildhall Walk carrying rucksacks and bags.
The group followed the three men into Commercial Road, assaulting another man on the way.
Officers are appealing for anyone in the CCTV image to come forward. They may hold vital information.
PC Darren Tombs, of Portsmouth’s central police station, said: ‘We are also keen to identify victims of the assault. This happened in a busy area of the city as many people were leaving clubs and bars.’
Anyone with information should call PC Tombs on 101.
You can also call Crimestoppers anonymously on 0800 555 111.
A 19-year-old man from Portsmouth was arrested on suspicion of violent disorder and was bailed pending further enquiries.