Polish Prime Minister Donald Tusk has criticized as "unacceptable" a Russian report on the plane crash that killed Poland's president.
President Lech Kaczynski, his wife Maria, and 94 senior officials died on April 10 when their plane crashed near Smolensk, in western Russia.
After months of investigation, Russia handed its report on the causes of the crash to Poland.
The Russian report has not been made public.
Tusk did not go into details of its content today, but he said that the report did not comply fully with the Chicago convention, the global accord that regulates probes of plane crashes.
Russia has said that it is handing all information over to Poland.
compiled from agency reports