The Akola police station has registered an FIR against Parambir Singh and 26 other police officers for alleged corruption and offense under sections of criminal conspiracy, destruction of evidence of the Indian Penal Code, and sections of the Scheduled Caste and Scheduled Tribe (Prevention of Atrocities Act), 1989. 

Param Bir Singh also filed a plea in the High Court of Bombay, challenging two preliminary inquiries initiated against him. 

He alleged that that, 

"This is a targeted case. Maharashtra Home Minister Anil Deshmukh had fixed a ‘collection target’ of Rs 100 crore per month for Assistant Police Inspector Sachin Vaze, who has been arrested by the NIA in connection with the planting of Scorpio with 20-odd gelatin sticks and a threatening letter near Antilia, the residence of Reliance Industries Ltd chairman Mukesh Ambani and the murder of SUV owner Mansukh Hiren."

The Bombay High Court has ordered a CBI probe and the federal agency has recorded the statement of Singh and Deshmukh. 

The Maharashtra government has already appointed a high-level inquiry committee (HLEC) by Justice Kailash Chandiwal, a retired judge of the Bombay High Court, to probe into the allegations against Deshmukh.