SISTERON, France (AP) -- The German co-pilot accused of crashing a passenger plane in the French Alps frequented a gliding club near the crash site as a child with his parents, according to a member of the club.

A stele and flowers laid in memory of the victims are placed in the area where the Germanwings jetliner crashed in the French Alps, in Le Vernet, France
A stele and flowers laid in memory of the victims are placed in the area where the Germanwings jetliner crashed in the French Alps, in Le Vernet, France (AP Photo/Christophe Ena)
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Francis Kefer, a member of the club in the town of Sisteron, said on i-Tele television that Andreas Lubitz' family and other members of the gliding club in his home town of Montabaur, Germany, came to the region regularly between 1996 and 2003.

French prosecutors say Lubitz deliberately slammed the Germanwings flight into a mountain on Tuesday, killing all 150 people aboard. German prosecutors are trying to determine what caused Lubitz to take such a devastating decision.

The crash site is about 50 kilometers (30 miles) away from the Aero-club de Sisteron glider airfield.

Officials at the club would not comment Saturday.

The area, with its numerous peaks and valleys and stunning panoramas, is popular with glider pilots. In the final moments of the Germanwingsflight, Lubitz overflew the major turning points for gliders in the region, flying from one peak to another, according to local glider pilots.

A special Mass was being held Saturday in the nearby town of Digne-les-Bains to honor the victims and support their families.

Bishop Jean-Philippe Nault led the Mass, attended by about 200 people from the surrounding region, deeply shaken by the crash. It was the deadliest crash on French soil in decades.

The plane shattered into thousands of pieces, and police are toiling to retrieve the remains of the victims and the aircraft from a hard-to-reach Alpine valley near the village of Le Vernet.

Lubitz's employers, authorities and acquaintances described a man who hid evidence of an illness from his employers - including a torn-up doctor's note that would have kept him off work the day authorities say he crashed Flight 9525.

Frank Woiton, another Germanwings pilot, said Andreas Lubitz told him he wanted to become a long-distance pilot and fly Airbus A380 or Boeing 747 planes.

Andreas Lubitz competes at the Airportrun in Hamburg, northern Germany in 2009
Andreas Lubitz competes at the Airportrun in Hamburg, northern Germany in 2009 (AP Photo/Michael Mueller)
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Woiton, who like Lubitz comes from Montabaur, says he met the 27-year-old for the first time three weeks ago when they flew Duesseldorf to Vienna and back together.

Woiton told German public broadcaster WDR on Friday that Lubitz didn't stand out and appeared like any other colleague.

He says Lubitz "flew well and knew how to handle the plane."

Searches conducted at Lubitz's homes in Duesseldorf and in the town of Montabaur turned up documents pointing to "an existing illness and appropriate medical treatment," but no suicide note was found, said Ralf Herrenbrueck, of the Duesseldorf prosecutors' office.

Prosecutors didn't specify what illness Lubitz may have been suffering from, or say whether it was mental or physical. German media reported Friday that the 27-year-old had suffered from depression.

Germanwings declined Saturday to comment when asked whether the company was aware of any psychological problems Lubitz might have had.

The Duesseldorf University Hospital said Friday that Lubitz had been a patient there over the past two months and last went in for a "diagnostic evaluation" on March 10. It declined to provide details, citing medical confidentiality, but denied reports it had treated Lubitz for depression.

Neighbors described a man whose physical health was superb and road race records show Lubitz took part in several long-distance runs.

Prosecutors said there was no indication of any political or religious motivation for Lubitz's actions on the Barcelona-Duesseldorf flight.

(© 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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