The UK terrorism watchdog has said there are dangers to releasing possible dangerous terrorists onto the streets after two years.
But David Anderson QC said it allows focus regarding what to do with them.
He was speaking to the Home Affairs Committee, which is hearing evidence on the terror prevention measures Tpims.
It comes after fugitive terror suspect Mohammed Ahmed Mohamed escaped surveillance last month by dressing in a burqa.
More top news
A cold front is sinking its way southwards tonight and bringing steady rainfall for some parts of the UK.
A Freedom of Information request revealed the cost of burying Raymond Morris which included a £15 floral tribute.
The international community is failing refugees from Iraq and Syria who have been displaced by Islamic State insurgents, says UN ambassador.