Shamima Begum - the teenager who fled London to join Islamic State group in Syria -will not be allowed to take entry into Bangladesh, said a press note.
External Publicity Wing of Ministry of Foreign Affairs issued the press statement today hours after the British teenager was stripped of her British citizenship.
British government sources said it was possible to revoke her UK nationality as she was eligible for citizenship elsewhere.
Her mother is believed to be a Bangladeshi national which means under Bangladesh law Shamima would be too, said Lord Carlile, a former independent reviewer of terrorism legislation.
Referring to the news on Shamima's citizenship status, the press statement stated: "It has come to our knowledge from different media sources that the Government of the United Kingdom has revoked the citizenship of one Ms. Shamima Begum on account of her radicalization in line with the ISIS outfit in Syria in the recent past."
It read: "The Government of Bangladesh is deeply concerned that she has been erroneously identified as a holder of dual citizenship shared with Bangladesh alongside her birthplace, the United Kingdom. Bangladesh asserts that Ms. Shamima Begum is not a Bangladeshi citizen."
"She is a British citizen by birth and has never applied for dual nationality with Bangladesh. It may also be mentioned that she never visited Bangladesh in the past despite her parental lineage. So, there is no question of her being allowed to enter into Bangladesh," added the statement.
In this regard, Bangladesh reiterates her firm commitment to adhere to the policy of zero tolerance against terrorism and violent extremism in all its forms and manifestation, the press note stated further.
Earlier in an interview with BBC, Shamima, 19, said she did not have a Bangladeshi passport and had never been to the country.
Her family has said they plan to challenge the British government's decision.