You're reading: Investigators probing three theories behind Petrozavodsk air crash

Moscow, June 21 (Interfax) - The Russian Investigative Committee is probing several theories as part of a criminal inquiry into the Tu-134 plane crash near Petrozavodsk.

"Investigators are looking at several theories behind the crash: a human factor, that is an error of the pilot or the airport ground services, a technical failure in the aircraft or in airport’s equipment and so on," IC spokesman Vladimir Markin told Interfax.

As a result of a crash landing by the Tu-134 airliner near Petrozavodsk in the early hours of Tuesday 44 people were killed and eight sustained various injuries.