This is a hard developing story..
Known so far:
The flight left Paris' Charles de Gaulle Airport at 11:09 p.m. local time and was supposed to land in Cairo at 3.15 a.m. Thursday. Both the departure and arrival cities are in the same time zone.
-- It vanished 10 miles into Egyptian airspace, the airline said.
--The plane's captain had 6,000 flying hours while the first officer had 4,000, Adel said.
--The Egyptian navy is conducting search and rescue operations in the area it vanished, CNN's Ian Lee said from Cairo. Armed forces are searching the area 40 miles north of Egyptian coastline.
-- There was no special cargo on the flight and no notification of any dangerous goods aboard, Adel said.
-- The plane entered EgyptAir's service on November 3, 2003, he added.
Developing..