Ghosh, known for her role in the high grosser Bangladeshi movie 'Beder Meye Josna', had joined the BJP at the state party headquarters in the presence of its West Bengal unit chief Dilip Ghosh on Wednesday.
"After Anju Ghosh joined, Bobby babu (Trinamool leader Firhad Hakim) had laughed saying that BJP has included a Bangladeshi national. I would request him to read and update himself. All documents identify her as an Indian citizen," party's state unit Vice President Jay Prakash Majumdar told reporters.
He blamed a section of media for raising questions over Ghosh's citizenship and running the news without "any in-depth research".
Majumdar went on to disclose the details of Ghosh's birth certificate, PAN card, passport, Aadhaar and voter card.
"Her birth certificate issued by Kolkata Municipal Corporation (KMC) clearly states that she was born in Kolkata," he said.
Incidentally, state Urban Development Minister and Kolkata Mayor Firhad Hakim had mocked the BJP for including Ghosh in the party on Wednesday.
"They should first see a person's citizenship before taking them in the party. Had there been any foreign cell of BJP, she could have joined," Hakim had said.
In mid-April during the Lok Sabha elections, there was a huge furore after Bangladesh actor Ferdous Ahmed was seen campaigning for Trinamool's Raiganj constituency candidate, Kanaia Lal Agarwal.
The BJP had also moved the Election Commission seeking strong action against another Bangladesh actor, Gazi Abdun Noor, for allegedly campaigning for Trinamool Congress candidate, Saugata Roy.
( With inputs from IANS )