Germanwings co-pilot had suicidal tendencies, prosecutors say

An undated file picture of co-pilot Andreas Lubitz is seen via Facebook March 26, 2015. The 28-year-old co-pilot is suspected of deliberately crashing a Germanwings jet into the French Alps on Tuesday, March 24, 2015. (Reuters)

A rescue helicopter from the French Gendarmerie flies over the snow-covered French Alps during operations near the crash site of the Germanwings Airbus A320, near Seyne-les-Alpes, March 28, 2015. The co-pilot suspected of deliberately crashing a passenger plane in the French Alps told his girlfriend he was in psychiatric treatment and that he was planning a spectacular gesture that everyone would remember, the German daily Bild reported on Saturday. (Reuters/Jean-Paul Pelissier)

People pay their respects at the memorial for the victims of the air disaster in the village of Le Vernet, near the crash site of the Germanwings Airbus A320 in French Alps, March 28, 2015. (Reuters/Jean-Paul Pelissier)

People identified by the mayor of Le Vernet as family members of the pilot of the Germanwings Airbus A320 react as they pay their respects at the memorial for the victims of the air disaster in the village of Le Vernet, near the crash site in the French Alps, March 28, 2015. (Reuters/Jean-Paul Pelissier)

French gendarmes and investigators work among the debris of the Airbus A320 at the site of the crash, near Seyne-les-Alpes, French Alps March 27, 2015. (Reuters/Gonzalo Fuentes)

Rescuers stand ready as relatives pay their respects at the memorial for the victims of the air disaster in the village of Le Vernet, near the crash site of the Airbus A320 in French Alps March 27, 2015. A young German co-pilot barricaded himself alone in the cockpit of Germanwings flight 9525 and apparently set it on course to crash into an Alpine mountain, killing all 150 people on board including himself, French prosecutors said on Thursday. The co-pilot, Andreas Lubitz, 27, who appears to have deliberately crashed a plane carrying 149 others into the French Alps, received psychiatric treatment for a "serious depressive episode" six years ago, German tabloid Bild reported on Friday. (Reuters/Robert Pratta)

Photographers take pictures at the memorial for the victims of the air disaster in the village of Le Vernet, near the crash site of the Airbus A320 in French Alps March 27, 2015. A young German co-pilot barricaded himself alone in the cockpit of Germanwings flight 9525 and apparently set it on course to crash into an Alpine mountain, killing all 150 people on board including himself, French prosecutors said on Thursday. The inscription in four languages reads "In memory of the victims of the air disaster of March 24, 2015." (Reuters/Robert Pratta)

A photo released March 25, 2015, by the French Interior Ministry shows a rescue worker near a fuselage section amongst the debris at the crash site of an Airbus A320, near Seyne-les-Alpes. French investigators will sift through wreckage on Wednesday for clues into why a German Airbus operated by Lufthansa's Germanwings budget airline plowed into an Alpine mountainside, killing all 150 people on board including 16 schoolchildren returning from an exchange trip to Spain. (Reuters/French Interior Ministry/Handout)

A photo released March 25, 2015, by the French Interior Ministry shows debris at the crash site of an Airbus A320, near Seyne-les-Alpes. French investigators will sift through wreckage on Wednesday for clues into why a German Airbus operated by Lufthansa's Germanwings budget airline plowed into an Alpine mountainside, killing all 150 people on board including 16 schoolchildren returning from an exchange trip to Spain. (Reuters/French Interior Ministry/Handout)

A photo released March 25, 2015, by the French Interior Ministry shows search operations at the crash site of an Airbus A320, near Seyne-les-Alpes. French investigators will sift through wreckage on Wednesday for clues into why a German Airbus operated by Lufthansa's Germanwings budget airline plowed into an Alpine mountainside, killing all 150 people on board including 16 schoolchildren returning from an exchange trip to Spain. (Reuters/French Interior Ministry/Handout)

French gendarmes and rescue crew make their way around debris from an Airbus A320 in the mountains, near Seyne-les-Alpes, March 24, 2015 in this still image taken from TV. The Airbus operated by Lufthansa's Germanwings budget airline crashed in a remote area of the French Alps on Tuesday, killing all 150 people on board including 16 schoolchildren. (REUTERS via Reuters TV/Pool)

A French gendarme makes his way around debris from an Airbus A320 in the mountains, near Seyne-les-Alpes, March 24, 2015 in this still image taken from TV. The Airbus operated by Lufthansa's Germanwings budget airline crashed in a remote area of the French Alps on Tuesday, killing all 150 people on board including 16 schoolchildren. (REUTERS via Reuters TV/Pool)

French gendarmes and rescue crew make their way around debris from an Airbus A320 in the mountains, near Seyne-les-Alpes, March 24, 2015 in this still image taken from TV. The Airbus operated by Lufthansa's Germanwings budget airline crashed in a remote area of the French Alps on Tuesday, killing all 150 people on board including 16 schoolchildren. (REUTERS via Reuters TV/Pool)

French gendarmes make their way around debris from an Airbus A320 is seen in the mountains, near Seyne-les-Alpes, March 24, 2015 in this still image taken from TV. The Airbus operated by Lufthansa's Germanwings budget airline crashed in a remote area of the French Alps on Tuesday, killing all 150 people on board including 16 schoolchildren. (REUTERS via Reuters TV/Pool)