Kurdish forces in north Syria warn they cannot secure Isis prisons for much longer

Kurdish commanders in northern Syria have warned they cannot secure Islamic State prisons and camps for much longer, as sporadic fighting with Turkish forces continues despite a Russia-broken ceasefire.

US officials have said that at least 100 Isis fighters have already escaped since Turkey launched its controversial incursion against Kurdish fighters two weeks ago.

Kurdish officials estimate that an additional 800 Isis family members may have also fled from Ain Issa camp, which was home to some 112,00 displaced people until the entire camp fled amid the fighting.

Among them were nine French suspected Isis members and at least two British citizens: Tooba Gondal, from east London who joined Isis in Syria and worked to recruit others to follow her, and Zara Iqbal, also from east London.

Before the conflict erupted, Kurdish-led Syrian Democratic Forces were holding some 12,000 Isis fighters in detention centres and camps, as well as tens of thousands of their family members.