Saber Lahmar has been charged with encouraging jihadists to fight for Islamic State in Iraq and Syria
An Algerian preacher who spent eight years in the US-run Guantánamo Bay prison has gone on trial in France for allegedly encouraging several young men to join the Islamic State group.
Saber Lahmar, a 52-year-old Algerian released by the US in 2008 and taken in afterwards by France, has been charged with encouraging jihadists to head to Iraq and Syria to fight for the extremist group in 2015.