The Supreme Court on Wednesday will hear a plea by former Mumbai Police Commissioner Param Bir Singh, who has unleashed a barrage of allegations against Maharashtra Home Minister Anil Deshmukh, and seeking a CBI probe against him.

In his petition, Singh has accused Deshmukh of adopting corrupt practices in posting or transfer of police officers and seeking to implicate BJP leaders in MP Mohan Delkar's suicide. He urged the Supreme Court to direct a fair CBI investigation into the acts of Deshmukh in abuse of his official position.