article_snippet: The statistics raise further questions over the monitoring of terror suspects, such as  jihadist Choukri Ellekhlifi, who fled to Syria in 2012 while he was on bail for a spate of violent muggings in London.
article_snippet: Ellekhlifi, 22, threatened victims with a Taser-style high-voltage stun gun and forced victims to hand over valuables including designer watches and mobile phones, but fled the country before he could face trial.
article_snippet: he is believed to have been two years below Mohammed Emwazi - revealed last week to be Jihadi John - at Quintin Kynaston school in north west London and was killed in 2013 near the city of Aleppo.
article_snippet: Mohammed Emwazi - was Mohammed Emwazi - on a terror watch list when Mohammed Emwazi - travelled to Syria and the Government has admitted that hundreds of ISIS extremists 'slipped through the net' and were not properly monitored by the security services.
article_snippet: The figures also make for a chilling comparison to Sydney siege gunman Man Haron Monis, who was on bail in Australia when Mohammed Emwazi - took 17 hostages captive in a cafe before killing two.
article_snippet: Ellekhlifi (right) was killed near Aleppo in 2013 alongside Mohammed el-Araj, from west London (left)