Russia is holding a day of mourning today for the victims of the April 10 plane crash, many of them Polish leaders.
Ninety six peopled died when the plane crashed in heavy fog in Smolensk, including Polish President Lech Kaczynski, and dozens of other Polish political, military, and religious leaders.
Tens of thousands of Poles lined the streets of Warsaw on April 11 as the body of Kaczynski was flown back to Poland.
The country has begun a week of mourning.
U.S. Secretary of State Hillary Clinton said the Polish leaders killed in the crash leave behind "a legacy that will live forever."
Meanwhile in Moscow, Russian investigators have begun analyzing evidence from the flight recorders.
Aleksander Bastrykin, head of the prosecutor-general's powerful investigative unit, said the recordings confirm the ageing Tupolev plane had no technical problems.
Interfax news agency quoted the deputy chief of the Russian Air Force's general staff, Alexander Alyoshin, as saying the pilot ignored orders from air traffic control not to land.
compiled from agency reports