Security camera footage has emerged of three British schoolgirls believed to have joined ISIL militants in Syria.<br /><br /> The three, aged 15 and 16, were seen waiting for hours at a bus station in Turkey, before travelling on to a city near the Syrian border.<br /><br /> Police believe the girls did make it into Syria and are now in the hands of ISIL.<br /><br /> The girls’ families and police issued urgent appeals for information after the three flew out of London for Istanbul on February the 17th.<br /><br /> Authorities believe they were radicalised online.<br /><br /> Serious questions are now being asked about how the girls were able to fly unaccompanied and get through border controls in both the UK and Turkey.