UPDATE - EgyptAir flight from Paris to Cairo 'disappears'

*UPDATES WITH NATIONALITIES OF PASSENGERS, FRENCH PRESIDENT’S REACTION, BACKGROUND
CAIRO (AA) – An EgyptAir flight from Paris to Cairo with 66 people on board went missing over the eastern Mediterranean Thursday morning after it entered Egyptian airspace, the airline announced.
In a series of posts made on its official Twitter account, the airline said its flight MS804, which included 56 passengers, seven crew members and three security personnel, lost contact with its radar system in the early morning hours.
"EGYPTAIR A320 was at a height of 37,000 ft [feet], and disappeared after entering the Egyptian airspace with 10 miles," it tweeted.
According to the airline, there were 30 Egyptians, 15 French, one British, one Belgian, one Portuguese, one Algerian, one Chadian and one Canadian aboard the plane.
EgyptAir said the Egyptian army had received a signal from the plane.
The airline said Egyptian and Greek authorities dispatched an aircraft and boats to search for the missing plane.
French President Francois Hollande called his Egyptian counterpart Abdel Fattah el-Sisi following the incident.
According to a statement issued by the Elysee Palace of France, Hollande shared his concern and agreed to cooperate with Egyptian authorities.
Meanwhile, French Prime Minister Manuel Valls told RTL channel that his country was in close contact with Egyptian civilian and military officials.
"Egypt sent exploration planes to the area. France is ready to provide every kind of assistance to Egypt," Valls said.
In October 2015, a passenger plane went down as it left Egypt’s Red Sea resort of Sharm el-Sheikh, killing all 224 people aboard, mostly Russian tourists. A Daesh affiliate had claimed responsibility for the incident.
While Russia said the plane was brought down by a bomb, Egyptian authorities insisted that the investigation into the October accident was still going on.
In February, Sisi admitted that the plane was brought down by terrorists seeking to damage the country’s tourism industry and relations with Russia.
In March, an Egyptian national briefly hijacked an EgyptAir plane and forced it to land in Cyprus.