The imposter had announced to organise the event in a five-star hotel at Kolkata by falsely claiming that it would be attended by Amitabh Bachchan, Ajay Devgn, Manoj Bajpayee, Kareena Kapoor and Jha himself.
Sources in the Prakash Jha Production House said as per their information the imposter had also roped in sponsors for the event in Kolkata.
"I have asked my officials to lodge police complaints in Kolkata as well in Patna," the maker of the film 'Satyagrah' said.
The sources in Jha Production House said the complaints had been lodged with Bhawanipur police station in Kolkata and with Shri Krishnapuri police station in Patna.
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The complaint lodged at Bhawanipur police station in Kolkata on August 14 said that a person identified as Presenjit Jha fraudlently claiming to be Prakash Jha's son had announced the event on August 14.
Sources in the Jha Production House in Mumbai said that the film-maker has only one daughter and no son.