Fifteen white men were arrested after sporadic outbreaks of violence across the city.

Earlier, it emerged that an official report due out this week will attack racial "polarisation" in the city, saying that schools and neighbourhoods are virtually segregated.

The report by Lord Herman Ouseley, a former head of the Commission for Racial Equality, and written several weeks ago, criticised racial intolerance, an inability to address problems and a lack of racial integration.

'Grip of fear'

There was a tense stand-off between riot police and an estimated 60 white youths in the Ravenscliffe area, late on Monday night.

The youths pelted stones and rocks at officers, and a car was set on fire and a wall demolished in the disturbances, which lasted about an hour and a half.

Elsewhere, an Asian gang confronted police after an Asian pizza place in the predominantly white Holme Wood area had its windows smashed.

The largely Asian area of Manningham, scene of the worst violence over the weekend, remained quiet.

BBC correspondent Barnie Choudhury said the violent incidents were not "classic" race riots such as those in Oldham and Burnley - more socially deprived youths wanting a "bit of fun".

"It seems police are being stretched and tested to see what resources are available to them," he said.

"Some residents are suggesting the youths are just simply trying it on".

There is a fear of confronting all-white and all-Muslims schools about... social and racial integration and segregation in schools

Lord Ouseley

Lord Ouseley's report, due for publication on Thursday, was written well before the current wave of violence in the city - said to be some of the worst in the UK for 20 years.

In the report, seen by the BBC, he warns that Bradford's leaders have been too scared to properly address the city's race problems.

The report warns: "The city finds itself in a grip of fear. There is a fear of people talking openly and honestly because of possible repercussions, recriminations and victimisation.

"There is the fear of confronting the gangs culture, the illegal drugs trade and the growing racial intolerance, harassment and abuse that exists.

"There is a fear of confronting all-white and all-Muslims schools about their contribution or rather the lack of contribution to social and racial integration and segregation in schools."

But the city council's David Ward told the BBC that only a small number of criminals were "damaging the image of Bradford" with their yobbish behaviour.

He cited the example of Bradford's annual cultural festival the Mela, held earlier this months, as an example of the kind of racial harmony that is "the real side" of the city.

Chairman of the West Yorkshire Police Authority, Neil Taggart, also denied that things were "going backwards" in the city or that the police "favoured" certain areas.

He told BBC Radio 4's Today programme: "As far as the police are concerned, there are no no-go areas in Bradford.

"I don't believe the police are too soft or even too hard. The ethos of West Yorkshire police is to give a fair service to all communities."

'Thuggery'

The report calls for better leadership and improved partnerships as the way forward.

Lord Ouseley: Wants better-integrated schools

The report was commissioned by the city council and other large organisations within Bradford.

More than 120 officers were injured after up to 1,000 Asian and white gangs clashed with officers over the weekend.

Prime Minister Tony Blair has attacked the "thuggery", saying rioters had ended up "destroying their own community".

Home Secretary David Blunkett said it was up to the people of Bradford to find solutions to the root of the violence, following urgent talks with the city's three MPs.