On 10 April 2010 , a Tupolev Tu-154M plane was carrying Lech Kaczyński , his wife Maria Kaczyńska , and other members of a Polish delegation ( top public and military figures ) from Warsaw to commemorate the Katyn massacre . The plane crashed while approaching Smolensk Air Base in Russia . The governor of Smolensk Oblast confirmed to the Russia 24 news channel that there were no survivors . 96 people were killed in the crash , including many of Poland 's highest military and civilian leaders
Katyn massacre
Katyn massacre
Lech Kaczyński