MOSCOW, Sept 14 (Reuters) - A Boeing airliner crashed in Russia's Siberia region on Sunday and all 87 people on board were believed to have been killed, Russian radio reported.

The airliner was flying from Moscow and crashed as it was landing in the town of Perm, the radio quoted the Emergencies Ministry as saying.

It said the crash occurred in an unpopulated area and that no casualties were reported on the ground.

Few other details were immediately known about the crash.

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