Haitunnesha Bibi, a resident of Sattor village under Panrui Police Station, was allegedly tortured by a team of policemen at her parents' house at nearby Kalamdanga village.
Bibi is the relative of a BJP activist of the area wanted by police in connection with a bomb attack on a TMC worker.
The then police superintendent of Birbhum, Alok Rajoria, had ordered in investigation against 12 police personnel, including SI Kartik Mohan Ghosh. Ghosh was later suspended.