Police have launched an investigation after two groups of men brawled in the city centre.
It happened at about 3pm on Saturday 31 May 2014, when two groups, totalling around 15, squared up to each other in Piccadilly Gardens.
A large scale fight broke out and police were called to the scene.
Officers arrived, however at that time there were no reports of any injuries, either to those involved or passersby and no reports of damage to any nearby shops.
Chief Inspector Faz Zaman, based on North Manchester Division, said: “This was a serious disturbance that took place in front of shoppers and families.
“It is completely unacceptable that anyone believes they can behave in this way in the middle of a busy city centre and I want to reassure everyone that will be taking action.
“There is no evidence that this was a pre-planned fight. However suggestions that this incident was racially motivated in some way are being investigated.
“I have now put together a team of detectives to go through all available evidence, including CCTV footage, and to follow-up on inquiries and I will happily update people when we have a significant development.”
Anyone who witnessed the disturbance or has any information, is asked to call police on 0161 856 3221 or Crimestoppers onÂ 0800 555 111.