The three ‘ Jihadi brides ’ stole family jewellery to pay for their flights out of the UK , it was revealed yesterday . Police have discovered they paid the £1,000 cost of their flights from Gatwick airport to Istanbul in cash . Before they went missing , the girls are believed to have communicated with 20-year-old Aqsa Mahmood , a notorious jihadi who left Glasgow last year . Scroll down for video . Shamima Begum , 15 , Kadiza Sultana , 16 , and Amira Abase , 15 , left Britain to join ISIS in Syria last month . The former medical student has become the online contact of choice for those wanting to travel to Syria and marry a militant fighter . One of the girls , Shamima Begum , used her Twitter account to try to contact her directly , asking for her to open a private line of communication . Friends suspect the girls were in touch with Mahmood and Islamic State recruiters via their mobile phones in the weeks before Christmas . Investigators are also examining whether the trio managed to exchange messages with their 15-year-old friend after she disappeared on December 6 . Police revealed yesterday that two women , aged 20 and 21 , have been arrested in North London over the latter ’ s disappearance . The suspects were held on suspicion of an offence under the Child Abduction Act and will answer bail next month . Former medical student Asqa Mahmood , 20 , a notorious jihadi who left Glasgow last year , left . Right , Kadiza Sultana , who is understood to have taken a piece of jewellery from her family to fund her plane ticket . Mark Rowley , who has overall responsibility for police counter terrorism , said the three girls would not be arrested for terrorist offences if they returned to the UK . ‘ We have no evidence in this case that any of the three girls are responsible for any terrorist offences , ’ he said . This hand-written list shows some of the vital items the ISIS recruits needed to buy . The girls were pictured going through security at Gatwick Airport last month , dressed in Western clothes . They were later seen on CCTV in Turkey , dressed in burkas and waiting for a bus to take them to the border with Syria . They are now believed to be in Raqqa , Islamic State ’ s stronghold and scene of some of its most barbaric atrocities . In an unfortunate turn of events , the Met had a counter terrorism officer based in Turkey but he was on annual leave when the girls touched down . At least 22 young women , the vast majority under the age of 20 , are feared to have travelled to Syria from the UK over the past 12 months . Police said the total confirmed number of people travelling to fight is now around 700 , with many more suspected of flying out undetected . Last night , the girls ’ families insisted that someone else helped them with the cost of the air tickets as the missing jewellery was not worth £1,000 . Halima Khanom , sister of Kadiza Sultana , said : ‘ My sister used to borrow a piece of jewellery off my daughters that was very sentimental to her and that ’ s what she ’ s taken . ‘ I feel there is someone out there helping in terms of funding because there ’ s no way my sister has got the cash to fund herself. ’ The girls were pictured going through security at Gatwick Airport last month , dressed in Western clothes . The jihadi girls ’ shopping list has been found and it included details of prices for flights to Turkey , visa money , coaches , hotels , taxis and other supplies . Among items they were advised to bring were a £50 epilator , two sets of £12 underwear , socks for £4 and a phone for £75 . Next to each item was as set of initials , appearing to show either who was to purchase them or who they were for . The list included tips as to how to cross over the Turkish border and into IS-held territory , written in different handwriting at the bottom of the page . The total cost of the items , which includes £1,000 plane tickets to Turkey , came to £2,190 .
Girls aged 15 and 16 disappeared from their London homes last month . They are believed to have paid £three cost of flights from Gatwick in cash . Teenagers are now believed to be in Raqqa , the 'capital ' of ISIS 's territory . Police believe the girls funded the trip to Syria by stealing family jewellery . Girls ' families insisted someone else must have helped with cost of ticket .