Police have rescued a person, held captive since December 15 with a ransom demand of Rs 250,000, from the house of a former Bihar minister in Patna.
A case of abduction and wrongful confinement has been filed against Singh who is yet to be traced, officer in-charge of S K Puri police station, K K Singh, said.
Raids are being conducted in various places to arrest Singh and others involved in the incident.