A photo taken on July 24, 2014 shows a plaque of an Air Algerie airlines office in Paris. Many French nationals are thought to be on board an Air Algerie jet that went missing after taking off from Burkina Faso for Algiers, French Transport Minister Frederic Cuvillier said on July 24. A source in Mali said that contact with the McDonnell Douglas MD-83 was lost over Gao in north Mali, a region that was seized by jihadists groups for several months in 2012 and that remains very unstable despite the Islamists being driven out in a French-led offensive. AFP PHOTO / STEPHANE DE SAKUTIN