Egypt officials on Wednesday said that a French ship has picked up signals from EgyptAir flight MS 804’s blackbox. The aircraft, carrying 66 people, crashed into the Mediterranean Sea on May 19. The search for the flight has narrowed to a 5-kilometre area in the Mediterranean Sea, AP reported.

The cause for the air crash has not been determined yet, though forensic experts said human remains found from the flight point to an explosion on board. Egyptian officials said that the aircraft was flying at a normal altitude of 37,000 feet before it went missing. Cairo had contradicted a statement from Greece’s defence minister in which he had said the flight had swerved sharply and plummeted several thousand feet before it vanished off the radar.