People lighting candles during a vigil for the victims of EgyptAir Flight MS804 yesterday at the Cairo Opera House in Egypt's capital. The plane flying from Paris to Cairo crashed on May 19 with 66 people on board. France's BEA air crash investigation agency said the French naval vessel Laplace was heading towards the search zone north of the Egyptian port of Alexandria. It is equipped with three specialist probes to speed up the search. Egyptian investigators said a radio signal had been received from an emergency distress beacon, usually located in the rear of the aircraft. This could help narrow down the search for the tail area of the fuselage, where the black box flight data recorders are kept.