The first case relates to a First Information Report (FIR) registered by Mumbai Police at Bandra police station in 1999 about a shootout at Naupada road junction targeting Majid Khan and his associates in which three people were killed.
The police had filed a chargesheet against Chhota Rajan, whose real name is Rajendra Sadashiv Nikalje, and his gang members Hemant Pujari, Kundan Singh Rawat and Samir Manek.
The agency also took over the probe into ranson calls made by Rajan's gang members Prince and Bunty Pandey between June and July 2002 demanding Rs 25 lakh from a person named Virendra Jain.
The Mumbai Police had filed chargesheet against four persons, including Rajan, who was shown as a wanted accused.
The agency has re-registered cases including those in which the local police had already filed its chargesheet.
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