Ghosh, known for her role in the high grosser Bangladeshi movie 'Beder Meye Josna', joined the BJP at the state party headquarters in the presence of Dilip Ghosh.
The actress, however, refused to answer queries as to whether she was still a Bangladeshi citizen or has been given any such status by the Indian authorities.
In mid-April, there was a huge furore after Bangladesh actor Ferdous Ahmed was seen campaigning for Trinamool's Raiganj constituency candidate, Kanaia Lal Agarwal.
PICTURES: Bangladeshi Actor Anju Ghosh Joins BJP, Skips Question On Citizenship
The Central government cancelled Ferdous's visa and blacklisted him.
The BJP had then demanded cancellation of Agarwal's candidature and an NIA probe to find out the sponsors who let a foreign national "interfere" in India's election process.
The BJP had also moved the Election Commission seeking strong action against Bangladesh actor, Gazi Abdun Noor, for allegedly campaigning for Trinamool Congress candidate, Saugata Roy.
Mitra, however, then claimed that Noor had come to see him for some urgent work.
CPI-M leader Md Salim ratcheted up his attack on the saffron party asking whether her name was there in the National Register of Citizens (NRC) list. “Will her name be there in NRC? Is she also a termite as per @AmitShah’s claims? Will Ajay Bisht campaign against her in West Bengal assembly elections? Don’t know who’s more shameless, BJP leaders or its supporters!,” he tweeted.
The Assam Congress also seized the opportunity and asked if the saffron party is going to form the government in Bangladesh as well.
A popular Bangladeshi actress on Wednesday formally joined the BJP in presence of d party's state president Dilip Ghosh in Kol. Actor Anju Ghosh,when asked about her current citizenship status, didn't reply. So is the #BJP going 2form govt in Bangdsh too?
(With additional information from IANS)