A succession of a dozen technical messages” sent by the aircraft around 0215 GMT showed that “several electrical systems had broken down” which caused a “totally unprecedented situation in the plane,” said Pierre-Henry Gourgeon.
“It is probable that it was shortly after these messages that the impact in the Atlantic came,” he told reporters at Charles de Gaulle airport where the flight was meant to have landed on Monday morning.
Airline officials had earlier said the plane was probably hit by lightning, but Gourgeon declined to make a direct link between weather conditions and the error messages