Description:Greek police say this helicopter was involved in an attempt to free a prisoner on Sunday (February 24). The chartered aircraft took fire from guards at Trikala jail as it hovered above an outdoor prison yard and dropped a rope ladder. Police say convicted criminal Panagiotis Vlastos then made a dash for the ladder as he tried to escape. But as guards exchanged fire with men inside the aircraft, it was forced to land. Vlastos was injured falling from the ladder and is now back in prison.(0:55)