Thane: A city-based businessman has alleged that he had been illegally detained and tortured at a police station last month and the personnel there extorted Rs 4 lakh for his release after falsely implicating him in a criminal case.

Following the complaint filed by one Rooplal Khemji Patel, city police last evening booked a case against the five personnel, including an Assistant Police Inspector--all attached to Naupada police station, under various sections of Indian Penal Code (IPC) for wrongful confinement to extort property, or constrain to illegal act. This has been stated in the daily crime report circulated to the media by the Thane Police and none of the police officers concerned are ready to speak on this issue.