A pilot's mistake, a glitch and bad weather are the main theories of the Antonov An-12 crash in Irkutsk, which took nine lives, Russian Investigative Committee spokesman Vladimir Markin told Interfax on Friday.

"Detectives are considering a pilot's mistake, a glitch and bad weather as the main theories of the accident," he said.

Five bodies found on the crash scene are being identified and their families are being recognized as aggrieved parties, Markin noted.

The An-12 of the Irkut Corporation on a return flight from Novosibirsk crashed near the Batareinaya railroad station in its approach for landing at the Irkutsk-2 airport at about 9:45 p.m. local time on December 26. The plane was delivering aircraft components.

The plane disappeared from radar screens when it was one kilometer away from the runway. The falling plane hit two military depots and sustained partial damage.

The Irkut Corporation said the plane had nine people aboard, including six crewmembers and three technicians.