Investigators probing the crash of a Slovak military plane that killed 42 people will begin questioning the only survivor on Sunday, a ministry spokesman said, Reuters reported. The army plane crashed into a snowy mountain in Hungary late on Thursday after starting its descent to an eastern Slovak airport too early. Martin Farkas, 26, was the only person on board to survive. "Doctors have awoken him (from drug-induced sleep), and the investigating commission will speak to him sometime today," Defence Ministry spokesman Zenon Mikle said. "He is conscious, his condition is stable and he communicates." Slovak official news agency TASR reported Farkas was in shock and suffering serious injuries when rescuers found him in freezing temperatures near the crashed plane. The army has begun analysing the Soviet-built Antonov aircraft's flight recorder, but officials said it could take several days to explain what caused the crash. Slovak air force officials said on Friday that bad weather, technical failure, a mistake by the crew or a combination of the three might have been to blame. The 36-year-old An-24 crashed and burst into flames 700 metres (2,300 feet) up in a forested, uninhabited mountain area near the eastern Hungarian village of Telkibanya, some 20 km from its destination, Kosice air base. Forty-two bodies, including those of 27 soldiers on a regular troop rotation from KFOR, the NATO peacekeeping force in Kosovo, seven support staff and eight crew were transferred to Slovakia on Saturday.