Russian President Dmitry Medvedev appointed Putin to head an inquiry commission . Polish president 's family is in Warsaw as country mourns his death . Tens of thousands flood onto streets to pay respects to Lech ##ner . Kaczynski died with other passengers in a plane crash in Warsaw on Saturday . Police say aircraft 's flight data recorders in good condition .
Polish president 's family is in Warsaw as country mourns his death . Tens of thousands flood onto streets to pay respects to Lech ##ner . Kaczynski died with other passengers in a plane crash in Warsaw on Saturday . Police say aircraft 's flight data recorders in good condition .