The probe agency, which had in November last year registered a case against Naik and others under anti-terror law for allegedly promoting enmity between different groups on grounds of religion, and doing acts prejudicial to maintenance of harmony, has found role of 23 entities including individuals and corporates linked to the preacher, NIA sources said today.
The NIA has questioned around 20 associates of Naik, including his sister Nailah Naushad Noorani, in connection with its investigation, they said.
The sources said that the agency has written to the banks seeking details of these accounts including transactions. At least Rs 100 crore have been allegedly invested in real estate by Naik and his associates in and around Mumbai.
The NIA officials have found complicated movement of money in the financial transactions made by people involved in the case, they said, adding that the role of Mumbai-based Harmony Media Pvt Ltd--involved in production of religious and educative videos--is being looked into in this case.
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The speeches of Naik, who is currently out of the country apparently to evade arrest, are banned in the UK, Canada and in Malaysia.
The Home Ministry has found that the NGO was allegedly having dubious links with Peace TV, an international Islamic channel, accused of propagating terrorism.
According to the Home Ministry, Naik, who heads the IRF, has allegedly made many provocative speeches and engaged in terror propaganda.