The aircraft crashed earlier this year as it tried to land at Smolensk airport in severe fog. The fog, which had thickened rapidly just before the arrival of the plane, had reduce visibility to little more than 650ft (200m), well short of the recommended minimum of 3,280ft (1,000m)

Poland reportedly wants access to US satellite photography that might cast new light on the weather conditions at the time of the crash, according to Gazeta Prawna, a Polish newspaper.

Prosecutors want help from American experts as to whether “there is a scientific and technical capacity to generate artificial fog”, the paper said.

Citing a source close to the investigation, the newspaper said the possibility that somebody may have created an artificial fog bank has now come under official analysis as Polish experts work to determine the causes of the tragedy.

Continue www.telegraph.co.uk/news/worldnews/europe/poland/7879703/Artificial-fog-may-have-brought-down-presidents-plane.html