**Russia has published previously secret documents on the 1940 Katyn massacre, in which some 22,000 Polish officers were killed by Soviet forces.**The state archive said the “Packet No. 1” documents had until now only been available to specialist researchers.
The Soviet Union denied its role in the massacre for decades.
Relations between Russia and Poland have warmed since the Polish president and others were killed in a plane crash on their way to a Katyn commemoration.
The documents that the state archive published were declassified in the 1990s but had only been available to specialist researchers, reports said.
They were published online on the orders of Russian President Dmitry Medvedev.
Poland has repeatedly demanded that Russia open all its files on Katyn.This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.
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