Cause of fatal plane crash near Moscow still unknown

Russian investigators are attempting to find the cause of Sunday's plane crash which killed all 71 people on board a passenger plane.

Emergency vehicles arrived late into the night at the scene where the passenger jet came down just outside Moscow.

Wintry conditions are hindering the investigation. Wreckage was strewn across a large area.

All possible causes for the crash, which was seemingly caught on a distant CCTV camera, are being considered. Officials have said one of the plane's flight recorders has been recovered.

Among the possible causes investigators said they are looking into include weather conditions, human error and technical failure, but they have not mentioned terrorism. No distress signals were received from the crew.