Police are investigating reports of a fight involving up to 20 men, some of whom may have been armed with knives, in a city park.
A spokeswoman for Leicestershire Police said officers were called to Abbey Park, Leicester, after being inundated with calls from concerned members of the public.
She said: "We were called to Abbey Park, in Leicester, at 6.22pm this evening following reports of a fight involving up to 20 men.
"There are unconfirmed reports that some of them may have had knives.
"Officers arrived at the scene and an ambulance was called as a precaution.
"We are still trying to establish the facts and are talking to a number of people who were in the park at the time to see if they have any information that might help officers find out what happened – and why."
She said the park was "very busy" at the time.
Hours earlier, bank holiday crowds had enjoyed the finale of the Bollywood Circus, which has been held in Abbey Park throughout the week.
The police spokeswoman added: "The investigation is still in its very early stages and nobody has been arrested.
"Officers are patrolling the area to offer reassurance to people using the park."
It is not known at this stage whether there were any injuries and police would not confirm if anyone had been taken to hospital.
Anyone with information should call the 101 police number.
