Police and community leaders in Leicester are calling for calm as they deal with "disorder" on the streets, which has bubbled over again following an India v Pakistan cricket match last month.
Additional officers are being sent to the East Leicester area and stop-and-search and dispersal powers have been put in operation.
Speaking on a Twitter video on Saturday, Leicestershire Police temporary chief constable Rob Nixon said: "We have had numerous reports of an outbreak of disorder in parts of the East Leicester area of the city.
"We have got officers there, we are taking control of the situation, there are additional officers en route and dispersal powers, stop search powers, have been authorised.
"Please do not get involved. We are calling for calm."
Reports circulating on social media said the spark point was a protest march on Saturday afternoon.
Footage online shows police, some with dogs, attempting to hold back two sets of crowds as objects including glass bottles are thrown. Some people are carrying sticks and batons.
Leicester MP Claudia Webbe also called for calm and urged people on the streets to go home.
"Like many Leicester East residents, I am concerned by ongoing reports of 'hate-filled clashes', including those which emerged today.
"It is vital that we work together to share the message of tolerance so that we can bring our communities together.
"This is a time for cool heads. I implore everyone to go home."
On Friday, chief constable Nixon said there had been a total of 27 arrests as part of "our policing operation in the East Leicester area".
He said the area had experienced "challenging times" and high visibility policing patrols would continue there.
He issued a message of thanks to the community for continuing to work together to call for calm in the area.