The Dutch husband Shamima Begum who joined ISIS wants to return to the Netherlands with her and their child, the BBC reported on Sunday.
Begum, 19, left London with two school friends to join ISIS when she was 15 but now wants to return to the UK with her newborn son.
Citing an interview with her husband Yago Riedijk, the BBC reported he had fought for ISIS but had surrendered later on and was being held in a Kurdish detention centre in north-eastern Syria.
The BBC said Riedijk now wants to return to the Netherlands with his wife and son, Reuters reported.
Riedijk faces a six-year prison sentence for "joining a terror organisation" if he returns to the Netherlands.
"She seemed in a good state of mind," he said of when he first met her. "It was her own choice. She asked to look for a partner for her, and I was invited. She was very young ... she
chose to get married and I chose to marry her."