A handout picture from the Russian Emergency Ministry shows Russian Emergency Situations Minister Vladimir Puchkov (4-L) and unidentified officials near a piece of wreckage of Russian MetroJet Airbus A321 at the site of the crash in Sinai
Media playback is unsupported on your device
Video

What could have caused Sinai plane crash?

The Russian airline Kogalymavia has blamed "external influence" for Saturday's Sinai plane crash which killed 224 people.

But an investigation by aviation experts using data from the aircraft's "black boxes" has yet to give its conclusions.

Richard Westcott reports on the investigation.

  • 02 Nov 2015
Go to next video: Russian plane crash: A nation in mourning