Police were called to a popular Stowmarket pub on Friday's Jubilee bank holiday after reports of a fight outside the venue.
Residents reported seeing three police cars attending the incident on Friday night at the Gladstone Arms in Combs Ford, which is around half a mile from the town centre.
Suffolk police did not confirm whether any arrests were made, but said investigations are ongoing.
A spokesman for the force said: "We were called to reports of an affray outside the Gladstone Arms at 9.20pm and investigations are continuing."
The country saw an extended four-day bank holiday weekend to celebrate the Queen's Platinum Jubilee, with events up and down the UK, and across the county from Thursday to Sunday.
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