A Turkish Airlines passenger jet flying from the German city of Dusseldorf to Istanbul was forced to make an emergency landing in Nuremberg on Wednesday after a crack was discovered in the cockpit window, the airline said.

The airline said in a statement that the plane was diverted to Nuremberg in southern Germany shortly after takeoff when the crack was detected.

A plane operated by the budget carrier of Germany's Lufthansa crashed in a remote area of the French Alps Tuesday, killing all 150 on board in France's worst aviation disaster in decades.

With the cause of the accident a complete mystery, authorities recovered a black box from the Airbus A320 at the crash site, where rescue efforts were being hampered by the mountainous terrain.