article_snippet: A further four girls who attend the same east London school as three teenagers who travelled to Syria to join ISIS are being monitored by detectives over fears three teenagers who travelled to Syria to join ISIS may seek to do the same.
article_snippet: After the 15-year-old managed to board a flight to Turkey the other girls were placed on a government warning list with the aim of preventing the other girls from taking the same path.
article_snippet: Left to right: Kadiza Sultana, 16, and 15-year-olds Shamima Begum and Amira Abase. 
article_snippet: Shamima Begum and Amira Abase, both 15, and 16-year-old Kadiza Sultana are all thought to now be Syria after last month flying to Turkey and travelling on by bus.
article_snippet: Ms Sultana, Ms Begum and Ms Abase at Gatwick Airport before boarding a flight for Turkey .
article_snippet: CCTV shows the three schoolgirls (circled) at a bus station in Turkey during their journey to join ISIS .
article_snippet: the teenagers themselves are believed to have travelled over ground from Istanbul to Gaizantep, before crossing the border into Syria near the Kilis crossing .
article_snippet: There was no evidence the girls were thinking of fleeing to Syria prior to the girls departure, Scotland Yard said in a statement, adding that the girls disappearance had 'come as a great surprise, not least to the girls own families'.
article_snippet: One line of inquiry is believed to be the theory that the girls who travelled to Syria were directly assisted by an ISIS facilitator based in Britain.
highlights_snippet: This included trio who fled to Syria last month after flying to Turkey .
  
highlights_snippet: These never reached those of the three teenagers now with ISIS .
  