Russian Foreign Minister Sergei Lavrov hit out on Thursday at criticism of the investigation into the plane crash that killed then Polish President Lech Kaczynski in April 2010.
Kaczynski and 95 other Polish dignitaries were killed when their plane crashed near the western Russian city of Smolensk on April 10.
"I won't discuss any concrete statements," Lavrov said when asked about Polish criticism of the report, "but I would stress that I consider speculation on this theme unethical."
A team of investigators from the Interstate Aviation Committee (MAK) said in a report released on Wednesday that pilot error was the main cause of the deadly crash.
MAK head Tatyana Anodina listed a number of mistakes that could have contributed to the disaster, including the crew's decision not to land at another airport despite being informed of unfavorable weather conditions at their destination.
Polish experts said they were dissatisfied with the documents provided by Russia.
Lavrov also rebuked Polish media for describing the MAK probe as carried out only by Russia and emphasized that the organization is a recognized and trusted international body.
MOSCOW, January 13 (RIA Novosti)