Fifty people died after a Boeing passenger plane crashed while landing in the city of Kazan in central Russia on Saturday, according to the Emergencies Ministry. The video footage and still images show ashes and rubble left from the plane after crash explosion and fire.

Shocking security cam footage of a Tatarstan Airlines Boeing 737's nosedive has been released, just as a number of theories about the circumstances and causes of the crash that claimed 50 lives are still emerging.