MUMBAI/NEW DELHI: Underworld don Chhota Rajan alias Rajendra Nikhalje, who is currently in New Delhi after his deportation from Indonesia, is believed to have spilled the beans on Mumbai police officers who have allegedly been in touch with Dawood Ibrahim, according to a report on India Today website.

Earlier, Rajan had alleged that some Mumbai cops have links with Dawood Ibrahim and that the Centre must keep that in mind when he is questioned. He also alleged he's been tortured in the past by the Mumbai police.

Mumbai-born Chhota Rajan is wanted for over 75 crimes ranging from murder and extortion to smuggling and drug trafficking. He was arrested by Indonesian Police in Bali upon his arrival from Australia on October 25.

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The Mumbai Police have nearly 70 cases registered against him, including 20 of murder, four cases under the Terrorist and Disruptive Activities (Prevention) Act, one under Prevention of Terrorism Act and over 20 cases under the stringent Maharashtra Control of Organised Crime Act.

The gangster was flown out of Bali on Thursday in a special Indian Air Force aircraft.

In an interesting development, as Rajan boarded the plane in Bali, Mumbai police chief Ahmad Javed called a press conference to announce that all the cases registered against the gangster have been transferred to the CBI because of the central agency's expertise in "handling transnational crimes".

The handing over of the cases is a damning commentary on the competence of the Mumbai Police. With this, it also became clear that the underworld don may perhaps never set foot in Mumbai again.

On Friday, CBI officials arrived at the Mumbai city police headquarters to meet police commissioner Ahmed Javed.

The CBI officials are also likely to meet their senior counterparts from the police to discuss the nitty-gritty concerning the documents of cases and other material related to the don, which are in possession of the local police, sources said.

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"The city police will hand over all the concerned documents, materials, evidences gathered against Rajan in all cases to the CBI," a police official said.

Mumbai police will have no role in investigating Chhota Rajan.

But, the local police will have to assist the CBI if the agency asks them to, given the complicated nature of the cases. Some of the cases date back to the 1980s, and police help may be required since they are well-versed with the topography of the city and Rajan's crime network, another official said.

(With inputs from PTI)