Four policemen have been suspended in India and a fifth transferred over the handling of a suspected new rape and murder case.
The father of a 21-year-old woman says she was gang-raped.
Her body was found the day after she disappeared on her way home from the factory where she worked in Noida, a suburb of Delhi.
Her father complained the police initially failed to react when he reported her disappearance, suggesting instead that she had gone off with someone.
Two men have been arrested and a third suspect is reported to have fled.
Meanwhile, five men accused of the gang rape and murder of a 23-year-old student have appeared in court in Delhi, after two of them offered evidence possibly in return for a lighter sentence.
A sixth man, who is 17, will be tried in a juvenile court.