Three missing British schoolgirls who fled to Syria to join Islamic State were last night believed to be in a house in the city of Raqqa . Shamima Begum , 15 , Kadiza Sultana , 16 , and 15-year-old Amira Abase went missing two weeks ago after boarding a flight from Gatwick to Istanbul . The girls are believed to have crossed from Turkey to Syria through the town of Arai . Yesterday Sky News reporter Stuart Ramsay said : ‘ We are told by very good sources in Raqqa that they are there and that they are under the control of Islamic State. ’ Missing : The three British schoolgirls , Shamima Begum , 15 , Kadiza Sultana , 16 , and 15-year-old Amira Abase , are believed to be in a house in the city of Raqqa after going missing two weeks ago . He also revealed that they were staying with a British girl – thought to be a pupil from their school who went missing in December and is believed to have joined IS . The 15-year-old student , the first to disappear from Bethnal Green Academy in east London , has not been identified by the authorities . Over the weekend it also emerged that letters from Scotland Yard to the girls ’ families – explaining that the pupils would be part of the inquiry into their friend ’ s disappearance – had been given to the schoolgirls rather than their parents . Fled London : Amira Abase , 15 , is among the trio believed to have flown from Gatwick to Istanbul . Metropolitan Police Commissioner Sir Bernard Hogan-Howe admitted that ‘ with the benefit of hindsight ’ officers should have communicated directly with the families . But he said parents had a responsibility to come forward if their teenagers betrayed any interest in extremist ideology . However Abase Hussein , the father of Amira , said his daughter would still be at home if he had seen the warning . ‘ If we knew , this wouldn ’ t have happened , ’ he said , adding : ‘ We would have discussed it and taken away their passports. ’ And Halima Khanom , sister of Kadiza , said : ‘ We wouldn ’ t have been here today if we ’ d got that letter and known what was going on. ’ At least 22 young women are feared to have travelled to Syria from the UK over the past 12 months . Scotland Yard has said the investigation into all the missing girls continues . Sir Bernard yesterday warned that girls lured to Syria by IS faced sex abuse at the hands of ‘ deeply misogynistic ’ militants . He said British jihadi brides were oblivious to the reality of life under the terror group and will be powerless to escape once they arrive .
Shamima Begum , 15 , Kadiza Sultana , 16 , and Amira Abase , 15 , fled to Syria . Went missing two weeks ago after boarding flight from Gatwick to Istanbul . Amira Abase reported its 'good ' sources say the girls are in a house in Raqqa . Also believed to be with fellow schoolgirl who went missing in December . Sir Bernard Hogan-Howe admitted police should have spoken to parents . At least 22 young women feared to have travelled to Syria in the last year .