Andreas Lubitz bought two Audis in the weeks before Tuesday 's crash and was planning to give one to his girlfriend . Germanwings pilot Andreas Lubitz bought two brand new cars several weeks ago and was going to give one of them to his girlfriend , it has been claimed . Lubitz , 28 , purchased the Audis from a dealership on the outskirts of Dusseldorf , near the apartment where he lived with his girlfriend . One of the cars had been delivered last weekend , just three days before the tragedy . Focus magazine said it was not known whether the car which was delivered last weekend was for Lubitz or his girlfriend . However , despite the gift , German media claimed that Lubitz 's relationship was in trouble and the couple may have split up . This has been seen as a contributory factor to Tuesday 's tragedy . The woman , who has not been named , is understood to be staying with family while German investigators conduct a full forensic search of the property in Dusseldorf . The couple lived in a smart top floor apartment on the outskirts of the city . Habibalah Hassani , 53 , who runs a pizza restaurant close to their flat said he had often seen them together . 'They were a very nice , friendly young couple . She was a polite and attractive woman . They would come in once maybe twice a week . 'He used to tip well , he was very generous . He had told me about his trip to San Francisco . I had n't seen them for a couple of months before this happened . ' Scroll down for video . German investigators removed dozens of boxes from the Dusseldorf apartment Andreas Lubitz shared with his girlfriend searching for clues which could possible explain the reasons behind Tuesday 's disaster . Investigators found a torn up sicknote which was valid on the day of the crash among other evidence . Another neighbour who declined to be named confirmed he lived at the flat with his girlfriend . ' I think she will be with her family grieving at the moment . It is very sad . ' German media claimed that Lubitz was receiving treatment for depression and had been certified sick on the day of the disaster . Ralf Herrenbrueck of the Dusseldorf prosecutors ' office said the discovering of sicknotes inside the property 'support the current preliminary assessment that the deceased hid his illness from his employer and colleagues ' . Mr Herrenbrueck said other documents found he was suffering from 'an existing illness and appropriate medical treatment ' . Prosecutors claim they have not found any evidence linking Lubitz to terrorism or any form of religious extremism . The thorough search has failed to find any suicide note among dozens of boxes removed from the apartment and Lubitz 's family home in Montabaur . Meanwhile , it has emerged that Lubitz knew the area in the Alps where he crashed the Airbus A-320 because he used to visit the area to fly gliders . Dieter Wagner of Montabaur flying club said : 'Andreas has participated in one of his courses in the Alpes-de-Haute-Provence with my niece , who was a good friend to him . He was passionate about the Alps and even obsessed . I 'm sure he knew the area of the crash well because he had flown in a glider . ' Ernst Muller , also a member of the club added : ' I am certain that Andreas has participated at least once or two internships with us in Sisteron ( Alpes-de-Haute-Provence ) ' .
One of the cars was delivered just three days before Tuesday 's tragedy . Ralf Herrenbrueck had been suffering from depression before his death . He and his girlfriend had been experiencing 'difficulties ' before the crash . His girlfriend is staying with family while police search their apartment .