51�Թ�

Alfred had been arrested and was being held in the Westerbork detention camp in The Netherlands.

The Taliban are also seeking the release of an Afghan who is one of the few remaining prisoners at the US's Guantanamo Bay detention camp.

Since the toppling of former President Bashar al-Assad's regime, there are fears the upheaval could threaten the security of the detention camps.

Dressed in bright orange jumpsuits, the 20 men were brought to a temporary detention camp called X-Ray, where the cells were exposed cages and the beds mats on the floor.

Throughout the civil war, which began in 2011, government forces held hundreds of thousands of people in detention camps, where human rights groups say torture was common.