French prison hostage situation over after inmate surrenders - French prison hostage-taker surrenders - Staff held hostage at Arles prison in France, local media report - Russian inmates take staff hostage at prison colony - Four dead in Russian jail hostage-taking - At least one killed as inmates take staff hostage in Russian prison - Russian forces kill IS-linked hostage takers at detention centre - Russian forces storm a detention facility to rescue staff taken hostage, killing hostage takers - Hostage takers in Rostov detention center eliminated, hostages safe -- authorities