Investigations are underway after a "brawl" broke out in a bar at the Balmoral Show.
Footage of the incident appeared on social media on Friday.
A statement from the PSNI said police are “investigating the report of an assault”.
It added: “Enquiries are ongoing.”
Balmoral Show Operations Director Rhonda Geary described it as “very disappointing”.
She told UTV the “brawl” was “quickly brought under control by security staff”.
Ms Geary went on: “There was nobody seriously hurt and it’s something we will look into and investigate.”