(BBC) Large-scale disorder broke out in Leicester on Saturday, with police and community leaders calling for calm.
Officers tried to hold back crowds amid tensions involving mainly young men from sections of the Muslim and Hindu communities.
Police said two arrests had been made, and that the trouble flared up after “an unplanned protest.”
It is the latest of several incidents, including violence after an India and Pakistan cricket match on 28 August.
A significant police operation will remain in the area in the coming days.
Suleman Nagdi, of the Leicester-based Federation of Muslim Organisations, told the BBC: “What we have seen on the streets is very alarming.”