London (CNN) A British teenager who left the UK to join ISIS in 2015 and now hopes to return home, has given birth, her family's lawyer said Sunday.

Shamima Begum, who was 15 at the time, left London's Gatwick Airport with two of her classmates and traveled to Syria.

Mohammed Akunjee said in a statement that Shamima Begum, now 19, had given birth to a boy and that both are believed to be in "good health."

It's a boy — Mohammed T Akunjee (@MohammedAkunjee) February 17, 2019

Speaking to Sky News from the camp and hours after giving birth, Begum said she was aware of ISIS beheadings and other brutality before she left to join the group, and was "OK" with it.

"Yeah I knew about those things and I was OK with it. I started becoming religious just before I left. From what I heard, Islamically that is all allowed so I was OK with it," Begum told Sky News.

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