MUMBAI, July 27 -- The Central Bureau of Investigation (CBI) has given a clean chit to former Mumbai police commissioner (CP) Param Bir Singh in two extortion cases that were registered against him when the Maharashtra Vikas Aghadi (MVA) government was in power. The retired officer had earlier been exonerated in two other criminal cases out of five cases registered against him during the MVA regime. All five cases against Singh were taken over by the CBI from the Maharashtra police pursuant to a Supreme Court order dated March 24, 2022. Singh had approached the apex court seeking transfer of all the five cases to an independent agency. On July 18, the CBI filed its charge sheet in a Thane court in an alleged extortion case registered in 2021 on the basis of a complaint by businessman Ketan Tanna. There was "no prosecutable evidence to attribute criminal liability" on Singh, who served as Thane's police commissioner during 2015-18, the CBI mentioned in the charge sheet, which sought to prosecute seven other accused, including former encounter specialist and then head of the Thane anti-extortion cell, Pradeep Sharma. Earlier, on May 19, the CBI filed its supplementary charge sheet in an alleged extortion case registered by the Marine Drive police station on July 21, 2021, based on a complaint from businessman Shyam Sunder Agrawal. The CBI sought to prosecute two police officers, but gave a clean chit to Singh and retired assistant commissioner of police Sanjay Patil as "no prosecutable evidence" revealing their involvement in the crime had surfaced during the probe. When contacted on Saturday, Param Bir Singh said, "All the five cases registered against me and taken over subsequently by the CBI were false, fabricated." The cases were lodged at the behest of a former state minister and a former IPS officer, in order to harass him, Singh told HT....