European Commission President Donald Tusk testifies in Warsaw about the disaster which killed 96 including then-President Lech Kaczynski. Tusk was Prime Minister at the time. He is locked in disputes with Law and Justice over the crash.
Poland releases a new report on the disaster, which killed 96 including then-President Lech Kaczyński, rejecting previous findings and claiming instead air traffic controllers in Smolensk, Russia, gave the jet erroneous information prior to two explosions destroying the jet in midair.
Poland's ruling Law and Justice unveils a new monument on the eighth anniversary of the disaster, which killed 96 including then-President Lech Kaczyński near Smolensk, Russia. Initial investigations primarily blamed errors on the flight crew but Poland is conducting a new investigation with a new report expected to claim Russian air traffic controllers purposely misled the jet about its location before it was destroyed in an explosion.
The Polish presidential election is being held earlier, following the death of Polish President Lech Kaczyński in a plane crash on 10 April 2010 near Smolensk. The two front-runners are Bronisław Komorowski from the ruling center-right Civic Platform (Platforma Obywatelska) party and Jarosław Kaczyński from the right-wing Law and Justice (Prawo i Sprawiedliwość) party.
The body of Poland's First Lady, Maria Kaczyńska, is flown to Warsaw to lie in state alongside that of her husband, President Lech Kaczyński. Poland has seen an outpouring of grief since the couple and scores of other senior Polish officials died in a plane crash in western Russia on Saturday.
Polish President Lech Kaczyński lies in state in Warsaw as Russia marks a day of mourning and Poland appoints an acting head of the central bank to replace the one killed in Saturday's air disaster near Smolensk.