The jihadi twin caught trying to enter Syria had already had a seven-month stay there with her toddler son , it emerged yesterday . Jamila Henry , 21 , lived with two-year-old Mustafa in the Islamic State stronghold of Raqqa until just before Christmas . She came back to Britain to leave him with family before trying to return to Syria . On Monday Turkish police picked her up in the capital Ankara . Henry managed to flee the UK for a second time despite being on the radar of MI5 , whose agents tried to recruit her . Wedding day : Jamila Henry with her estranged husband , whose identity is being protected . They interviewed her , gave her a smartphone and repeatedly contacted her . But , under their noses , she was able to steal her glamorous identical twin ’ s passport and head back to the conflict zone . The astonishing lapse comes weeks after it emerged that Mohammed Emwazi – the Islamic State butcher called Jihadi John – was known to the security services for five years and they had tried to recruit him too . Despite being classed as a priority target , Emwazi managed to travel to the Middle East and start his reign of terror in Syria . Michael Adebolajo , one of the killers of Lee Rigby in Woolwich , was also courted by MI5 . Last night , a friend of the Henry family lashed out at ‘ bumbling ’ MI5 officers , accusing them of trying to cover up their mistakes . ‘ They are a joke , ’ said the source . ‘ They keep calling everyone to find out what happened and telling them what they should and shouldn ’ t say to people . Travel : Ms Henry tried to use a passport , left , which belonged to her 'party girl ' twin sister Jalila , right . ‘ They were all over the family for months after Jamila came back but were left whistling in the wind when she disappeared again. ’ Under surveillance : Jamila Henry was questioned by MI5 before she fled to try and travel to Syria . Henry returned in December under pressure from relatives including her estranged husband . A source close to the family said : ‘ Her husband had no idea she was going to take Mustafa to Syria . He was extremely glad when they both returned safely . ‘ He and his parents were distraught and traumatised in the months the baby was missing . ‘ He in particular struggled not knowing where his son was or whether or not he was safe . It was a testing time . ‘ He suffered many sleepless nights fearing he would never see his child again . He had no contact with Jamila . All he could do was send messages via her family pleading for her to return his son and just prayed that his pleas would reach her. ’ Henry was stopped and questioned for up to nine hours by MI5 officers and detectives from Scotland Yard ’ s counter-terrorism command when she returned home with Mustafa in December . They released her without her being arrested or charged in the belief that she would co-operate with them as they investigated her movements and contacts in Syria . Henry converted to Islam in her teens and moved to east London where she had an arranged marriage with her husband , a Muslim Turkish Cypriot . The couple soon had their child but their relationship collapsed when Henry began spouting radical beliefs . Her latest journey to Turkey was on the passport of her ‘ south London party girl ’ twin sister Jalila . Yesterday Henry remained under arrest at a high-security central London police station after being flown back from Turkey to Luton airport on Thursday . She is being held on suspicion of preparing acts of terrorism , an offence which carries a maximum penalty of life imprisonment . She is the latest woman to flee the UK to join the barbaric terrorist group as a jihadi bride and support its frontline fighters . Last month three ‘ straight A ’ east London schoolgirls , aged 15 and 16 , abandoned their families to travel to Syria via Turkey . They were following in the footsteps of a friend who joined Islamic State in December . All four went to the same Bethnal Green school . Jihad : Ms Henry is thought to have been heading to ISIS-controlled territory ; pictured is their capital Raqqa . Sorry we are not currently accepting comments on this article .
Jamila Henry , 21 , fled to Syria last year with her one-year-old son . When she returned she was repeatedly interviewed by MI5 , relative says . But last year she managed to fly to Turkey using passport stolen from her 'party girl ' twin sister Jalila . She was stopped at the Islamic border and arrested on her return to the UK .