Media Reproduction Not Supported on Your Device 15 years lost his nationality in the United Kingdom.
The lawyer of the family
Tasnime Akunjee said they were "disappointed" with the decision and were considering "all the legal possibilities" to challenge it.
Ms. Begum left Bethlehem Green, eastern London, with two friends from school in February 201
At 19, she was found in a Syrian refugee camp last week after she left Bagus, the last fortress of IS. The BBC's interview, Ms. Begum, who has just begun a son, said she now wants UK forgiveness and return home.
ITV News said Ms. Begum's mother had received a letter from the Interior Ministry on Tuesday.
The letter says Interior Minister Sajid Djavid has made the decision to abolish the British citizenship of his daughter and the order was subsequently made.
She asked her mother to notify Mrs Begum of the decision and to inform her that she had the right to appeal.
Whitehall sources confirmed that the Interior Minister had made the decision.
Under the British Nationality Act 1981, a person may be deprived of nationality if the Home Secretary is convinced that it would be "beneficial to the public good" and as a result they would not become stateless.
Ms. Begum said she had traveled to Syria with her sister's British passport, but she was taken from her when she crossed the border.
It is believed to be a legacy of Bangladesh, but when asked by the BBC, she said she had no passport to Bangladesh and never was in the country.
] Ms. Begum was 15 years old and lives in Bethnal Green, London, when she leaves the UK in 2015
Mr Djavid told MPs on Monday that he would not "hesitate to prevent" the return of the British who traveled to Syria to join the IP.
He said more than 100 couples have lost their British citizenship after a trip to support terrorist groups. fugitive beheading fighters, and videos showing "good life" under IS
However, she said she did not agree with everything the group had done. "I actually support some British values and I'm ready to go back to the UK and calm down again and restore those things," she told the BBC.
Ms. Begum left Britain with two other students, Kaditsa Sultana and Amira Abasse. Kaditsa is believed to have died when the house was blown up, and Amira's fate is unknown.
Dating with the police
Image courtesy of
Kadiza Sultana, Amira Abase and Shamima Begum (lr)
Ms. Begum gave birth to a baby boy last weekend after having lost two children before.
Her husband, a Dutchman who turns to Islam, is believed to have surrendered to a group of Syrian fighters about two weeks ago. ]