Spain train crash kills at least 68 as witnesses describe devastating scenes

• Deadly rail crash: Scores of people have been killed and about 100 injured after a high-speed train collided with a stationary train south of Madrid. Spain's transport minister called it "inexplicable" that a train was allowed to continue its journey despite a red signal being in place.

• 'People were hurled into the air': Several witnesses told CNN about the chaotic moment when passengers were thrown airborne during the collision. Rescue operations are still ongoing and the high-speed line linking Madrid with Andalusia remains suspended.