PARIS—French aviation investigators have concluded that a cockpit fire likely caused the crash of an EgyptAir flight from Paris to Cairo two years ago and complained of a lack of cooperation on the probe from Egyptian authorities.
The finding, published in a note Friday evening by France’s Bureau d’Enquêtes et d’Analyses, escalates a long-simmering dispute between France and Egypt over the May 2016 crash, which killed all 66 people on board. Egyptian aviation investigators, who led the investigation at first, claimed to have...