Ms Begum, now 23, left Britain with two friends from the Bethnal Green Academy in east London, who are thought to have been killed in the conflict.
She was captured following the collapse of ISIS in January 2018 and taken to the al-Hawl detention camp, before being transferred to the al-Roj camp, where she has disavowed the terrorist group and said she wants to return home.
"The evidence is overwhelming that she was recruited, transported, transferred, harboured and received in Syria by ISIS for the purpose of sexual exploitation and marriage to an adult male - and she was, indeed, married to an adult, significantly older than herself, within days of her arrival in Syria, falling pregnant soon after," they said.
Ms Knights told the tribunal it is here that she is being"held in conditions of indefinite detention by a non-state actor, prevented from all access to her by lawyers and independent experts and, to her detriment, unrestricted access has been given to her by the press.
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