Baby of Islamic State teenager in UK furor dies: group

FILE PHOTO: Renu Begum, sister of teenage British girl Shamima Begum, holds a photo of her sister as she makes an appeal for her to return home at Scotland Yard, in London, Britain February 22, 2015. REUTERS/Laura Lean/Pool

DEIR AL-ZOR, Syria (Reuters) - The baby of Shamima Begum, a teenager who left London to join the Islamic State group in Syria, has died, a spokesman for the U.S.-backed Syrian Democratic Forces (SDF) said on Friday.

Begum, whose two older children had also previously died, was stripped of her British citizenship last month on security grounds after she was discovered in a detention camp in Syria.

The 19-year-old left London to join IS when she was 15. She had sought to return to Europe with her third child, who was born just over three weeks ago.

SDF spokesman Mustafa Bali said the child had died. Shamima has said in media interviews her baby son was called Jarrah.

Begum married Yago Riedijk, a Dutch fighter for IS who surrendered to Syrian fighters and was being held in a Kurdish detention center in northeastern Syria.

The family's lawyer said earlier on Friday there were strong but as yet unconfirmed reports that Begum's infant son had died.

The fate of Begum has illustrated the ethical, legal and security conundrum that governments face when dealing with the families of militants who swore to destroy the West.

The U.S-backed SDF is now trying to take Islamic State's last, small patch of ground in eastern Syria. They have slowed their offensive on the jihadist enclave at Baghouz near the Iraqi border to allow many thousands of people to pour out in an exodus that has lasted weeks.

(Reporting by Rodi Said in Deir al-Zor province, Syria, Paul Sandle and William Schomberg in LondonWriting by Lisa Barrington, Editing by William Maclean/Mark Heinrich)