Rescuers searched on Sunday for six French soldiers missing after a helicopter crashed into Atlantic waters during a training exercise off Gabon's coast. Two soldiers were confirmed dead. Three soldiers were found alive, but one of them later succumbed to injuries suffered in the crash that happened late Saturday, military spokesman Lt. Col. Pascal Carpentier said. Another soldier's body was pulled from the water overnight. The helicopter went down shortly after taking off from a French naval vessel participating in the joint exercise with Gabon forces. The cause of the crash was not immediately known. Two rescue helicopters were searching the zone where the aircraft went down off Nyogne, a village between the west African country's capital, Libreville, and the oil port of Port Gentil.