The report, which was released under the Freedom of Information Act, but was redacted, identified one school where teachers had brought the problem to the police’s attention.
It said officers had identified almost 140 potential victims some as young as 13, who were being plied with drugs and alcohol and then sexually abused and raped.
But the police report, which was shared with social services and other agencies at the time, stated: “The predominant offender profile of Pakistani Muslim males… combined with the predominant victim profile of white females has the potential to cause significant community tensions.
“There is a potential for a backlash against the vast majority of law abiding citizens from Asian/Pakistani communities from other members of the community believing their children have been exploited.
“These factors, combined with an EDL [English Defence League] protest in Dudley in April and a General Election in May could notably increase community tension.
“Police will be criticised if it appears we have not safeguarded vulnerable children, investigated offences and prosecuted offenders.”