New Delhi: Supreme Court on Wednesday refused to entertain the plea of former Mumbai Police Commissioner Param Bir Singh seeking CBI probe in the alleged corrupt malpractices of Maharashtra's Home Minister Anil Deshmukh.

Supreme Court asked former Mumbai Police Commissioner why he has not made Maharashtra Home Minister a party in his petition as the allegations are levelled against him.

Supreme Court said that the allegations levelled by former Mumbai Police Chief against Maharashtra Home Minister is very serious and asked the senior advocate Mukul Rohatgi appearing for Param Bir Singh why he is not approaching Bombay High Court for seeking CBI investigation.

The petition was listed before a bench of Justices SK Kaul and R Subhash Reddy.

In his plea, Param Bir Singh, who was transferred to Maharashtra Home Guards recently, had repeated the allegations that he had levelled against the Home Minister in an eight-page letter to Chief Minister Uddhav Thakeray — that Deshmukh had asked the suspended cop Sachin Waze, who was arrested by the NIA in the Antilia bomb scare probe, to collect Rs 100 crore every month.

In his petition, Mumbai's top cop had also accused senior leader of NCP of interfering in probe, pressuring him to implicate BJP leaders in the death by suicideof Dadra and Nagar Haveli MP Mohan Delkar and indulging in “corrupt malpractices” in police transfers and postings.