British police chiefs have urged people to stay off the streets of Bradford, England, tonight in a bid to prevent further rioting.
As a major clean-up got under way in the riot-torn city, police and civic leaders appealed for calm after violence that left 120 police officers injured, two people stabbed and led to 36 arrests.
Twenty-three of those arrested were white and 13 were Asian, the West Yorkshire police said.
Chief Superintendent Phil Read said: "I would make a major appeal for calm, restraint and would urge people to stay indoors.
"We will have additional resources on duty this evening to deal with any potential outbreaks of disorder."
He also appealed to onlookers to stay away if there was a repeat of last night's violence.
Earlier Mr Terry Rooney, a local MP, warned Bradford could be in for a "long summer" of racial violence, a local MP has warned.
Mr Rooney said last night's street riots could "unleash racial tension across the city" and spark further clashes involving a "hardcore" of troublemakers.
He said the common theme of the race riots in Oldham, Burnley, Leeds and now Bradford had been the National Front and BNP.
Police had to call in reinforcements from surrounding forces as the city was rocked by more than eight hours of violence.
Gangs of Asian and white youths fought running battles with officers who were pelted with bricks, bottles, petrol bombs and fireworks and attacked with baseball bats and hammers during disturbances in which two people were stabbed and cars set on fire.
Rioters torched Manningham Labour Club and a BMW garage, destroying thousands of pounds worth of cars on the forecourt. Two police horses were also injured, with one suffering stab wounds.
At the height of the violence, up to 1,000 officers were out on the streets of Bradford and the suburb of Manningham.
PA