British Agents Posed as Jihadis Online to Thwart First All-Female ISIS Terror Cell

Teenage girl becomes youngest convicted ISIS terrorist in UK

Safaa Boular (L), convicted of terrorism offenses on June 4 along with her mother, Mina Dich (top R), and her sister, Rizlaine Boular (bottom R), who both pled guilty to terrorism charges, together with a fourth woman. Met Police

LONDON—A British teenage girl has become the youngest convicted ISIS terrorist after MI5 operatives posing as jihadis uncovered a plot to attack London by befriending her “online husband” in Syria.

Safaa Boular, 18, was found guilty of plotting with her sister and mother—as part of the first female-only cell known in the UK—to carry out a gun and grenade attack on the British Museum.