Documents obtained by Global News show the parole system has been struggling with radicalized terrorism offenders.

One of the twin brothers from Ottawa who pleaded guilty to terrorism-related charges last week had hatched a plan sneak out of Canada and travel overland to join ISIS in Syria, court documents reveal.

Ashton Carleton and Carlos Honor Larmond, as well as Suliman Idris Mohamed, were arrested as part of an RCMP investigation called Project Slipstream in Jan. 2015.