The author of a controversial report on child sex grooming has warned it is "dangerous" to view it as an issue of men of Asian origin preying on white girls.
The Deputy Children's Commissioner for England Sue Berelowitz faced criticism from unnamed sources that her report last month failed to address racial factors in the crime, following prominent cases of abuse by gangs of men of Pakistani backgrounds in Rochdale and Rotherham.
But she told a parliamentary committee that there was "absolutely incontrovertible evidence" that men from every ethnic background were involved in abuse of this type.
Asked about the anonymous sources - which purported to reflect the views of Government ministers including Education Secretary Michael Gove - Ms Berelowitz told the Commons Home Affairs Committee: "It is deeply troubling to me that they are finding it so difficult to accept the evidence that we have, which is that people from every single ethnic group are, I'm afraid, carrying out forms of sexual violence of this particular type against young children.
"We have absolutely incontrovertible evidence of that."
Ms Berelowitz cited one ongoing investigation in which she said she had been shown details of more than 100 victims and perpetrators, virtually all of whom were white.
But she said that her report was unable to provide a full racial breakdown of perpetrators because two-thirds of the submissions made to her inquiry included no details of the ethnic identity of the men involved and only 3% provided full data.
"The picture I am getting from around the country is that the perpetrators reflect the general demographic," she told the committee.
On the widespread belief that grooming was predominantly carried out by gangs of Pakistani men, she said: "I believe it is actually dangerous to hold fast to that definition, because we know that victims are falling through the net when people hold fast to the definition that victims are mostly white and perpetrators are mostly Asian."
She insisted she would never gloss over racial issues in the name of so-called "political correctness", telling the committee: "It's not in the best interests of children to try to hide or minimise any body or group that might be a risk to children. I have been absolutely rigorous in facing up to the realities of what we have heard and seen."