Ninety per cent of rape cases involve relatives of the victims while almost 100 per cent of those involved in eve-teasing are well-educated married men.

Delhi Police Commissioner R S Gupta provided these startling figures at a press conference on Thursday.

While making a separate presentation on Crime Against Women, the commissioner said a case study revealed that persons unknown to the victims commit only 10 per cent of rapes.

Gupta said during a special drive in the North Campus of the Delhi University, it was found that none of the students were involved in eve-teasing.

"We found an unusual trend during the case study. In the 381 cases of eve-teasing registered since August 15 this year, those involved were found well-educated, well-employed and married persons," Gupta said.

He said the Delhi police in collaboration with a non-governmental organisation is conducting a case study of rape cases in which the accused have been acquitted from the court.