Speaking to The Mail on Sunday, Ahmed Ali, 60, Shamima’s, dad said that he backs the Home Secretary Sajid Javid’s decision to strip his daughter of her British citizenship.
He said: “I know they [the British Government] don’t want to take her back, and in this I don’t have a problem.
“I know she is stuck there [in Syria] but that’s because she has done actions that made her get stuck like this.”
His comments come in stark contrast to that of Begum’s British-based relatives who are calling for her to be allowed to return to the UK.
Mr Ali added: “I am on the side of the Government.
“I can’t say whether it is right or wrong, but if the law of the land says that it is correct to cancel her citizenship, then I agree.”
The Mail on Sunday tracked down Mr Ali last week at his home in the Sunamganj region of north-east Bangladesh.
The retired tailor came to Britain in 1975, marrying Begum’s mother, Asma, seven years later.
They settled in Bethnal Green, east London, and had four daughters, but from the mid- 1990s he started to split his time between Britain and Bangladesh, where he married a second wife.
He last saw his youngest daughter when he visited the UK two months before she fled to Syria with school friends Kadiza Sultana and Amira Abase in March 2015.
Begum, who gave birth to a son, Jarrah, last Sunday, pleaded to be allowed back to the UK but sparked outrage by failing to apologise for joining the terror group.
Her dad said: “If she at least admitted she made a mistake then I would feel sorry for her and other people would feel sorry for her. But she does not accept her wrong.”
Mr Ali said his daughter has shown no signs of being radicalised, adding: “I never saw anything of concern in her at the time. She was as usual, normal. She never used to pray regularly, she was not that Islamic-minded.”
Begum’s relatives in Britain have warned the Home Secretary that they will challenge his decision to strip her of her British citizenship.
The Mail on Sunday said it discovered another case of a woman who left to join ISIS and was stripped of her British citizenship – with the decision then being reversed.
The case involved another jihadi bride, identified only as “G3”, who fled to Syria to join ISIS with her two children, then aged one and two, in November 2016. She was arrested in Turkey as she tried to return to the UK.
As with Begum, the Home Office stripped the woman – of Bangladeshi heritage but born in Enfield, north London – of her British citizenship. However, her family won an appeal.
As ISIS loses its last stronghold in Baghouz in Syria, there have been reports of an exodus of British jihadi brides and their children to Kurdish refugee camps in the north of Syria.
The Kurdish authorities have said as many as 12 British jihadi brides are living in Al-Hol, the camp where Begum was found.