Planes are seen at the airport in Duesseldorf, western Germany on March 24, 2015, where the crashed Germanwings airplane was due to land. (AFP photo)
Prime Minister Narendra Modi today expressed sorrow over the air crash involving a German airliner in France.
"Crash of the Germanwings flight is extremely unfortunate," he tweeted.
An aircraft of German airliner Germanwings, a low-cost subsidiary of Lufthansa, crashed in a remote part of French Alps, killing all 150 people on board, in the worst plane disaster in mainland France in four decades.
Lufthansa Chief Executive Carsten Spohr has said it's the "dark day" for the airline.
"We do not yet know what has happened to flight 4U9525. My deepest sympathy goes to the families and friends of our passengers and crew," Lufthansa said on Twitter, citing Spohr.