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Wreckage is seen at the site of a Tatarstan Airlines Boeing 737 crash at Kazan airport, November 17, 2013. Image Credit: REUTERS

Moscow: A Russian passenger airliner crashed on Sunday night while trying to land at the airport in the city of Kazan, killing all 50 people aboard, officials said.

The Boeing 737 belonging to Tatarstan Airlines crashed at about 7.20pm local time (1520 GMT). There were no immediate indications of what may have caused the crash.

Reports said the plane appeared to lose altitude as it was making a second landing attempt, crashing and catching fire. Weather in the city soon after was reported to be light precipitation and winds of about 8 metres per second.

Kazan is about 720km east of Moscow, where the flight originated.

A spokeswoman for the Emergencies Ministry, Irina Rossius, said there were 44 passengers and six crew members aboard and all had been killed.

Russia has seen a string of deadly crashes in recent years. Some have been blamed on the use of aging aircraft, but industry experts point to a number of other problems, including poor crew training, crumbling airports, lax government controls and widespread neglect of safety in the pursuit of profits.

The last fatal airliner crash was in December, when a Russian-made Tupolev belonging to Red Wings airline careered off the runway at Moscow’s Vnukovo airport, rolled across a snowy field and slammed into the slope of a nearby highway, breaking into pieces and catching fire. Investigators say equipment failure caused the crash, which killed five people.