Poland State Mournıng Presıdentıal Aırcraft Crash

epa02121235 The coffin containing the body of the late President is covered with the traditional Flag of the President of the Republic of Poland in the Presidential Palace in Warsaw , Poland , 17 April 2010 . In the background there are the late President ' s brother Jaroslaw Kaczynski ( 2R ) daughter Marta ( 3R ) with her husband Maciej Dubieniecki ( 4R ) as well as the Late President ' s cousin Jan Maria Tomaszewski ( R ) . The mass for the late President Lech Kaczynskihis wife Maria to be held in the St . John Cathedral will end the Warsaw state mourning ceremonies . The Presidential Couple died in the TU-154 M plane accident on 10 April 2010 near Smolensk in Russia , they were to take part in the Katyn massacre commemorations .  EPA/Jacek Turczyk POLAND OUT