A Commons committee has heard that Mohammed Ahmed Mohamed, who escaped from a mosque in West London, was involved in fighting, attack planning and recruiting for Al Shabab in Somalia.
The Home Affairs Committee is hearing evidence from David Anderson, the independent reviewer of terror laws. Anderson says Terrorism Prevention and Investigation Measures are not a foolproof way of keeping the population safe, adding:
"I'm troubled by the fact that there are cases which can't be prosecuted at all."
More top news
Twelve fire engines and around 80 firefighters were called to a fire at a leisure centre in Highbury Crescent, Highbury.
A dog has died after being dragged along a railway station platform when its lead became trapped in train doors.
A beluga whale has been spotted in the Thames near Gravesend.