A deputy speaker of Poland's upper house of parliament, the Senate, put the responsibility for the 2010 plane crash on former Polish Prime Minister and current President of the European Council Donald Tusk.

On February 2, Polish Defense Ministry spokesman Bartlomiej Misiewicz said that Poland would resume the work of the commission investigating the crash of the passenger plane near the western Russian city of Smolensk, starting the inquiry from the very beginning again.

"The political responsibility [for the plane crash] rests on those who organized the visit [of Kaczynski to Russia]…Prime Minister [Donald Tusk] and Foreign Minister [Radoslaw Sikorski], who played diplomatic games with [Russian President Vladimir] Putin," Deputy Senate Marshal Adam Bielan told Polish Radio ZET.

He added that the plane crash could not be investigated properly while Tusk's Civic Platform party was in power. Civic Platform was the ruling Polish party for almost eight years until its defeat in the parliamentary elections that took place on November 16, 2015.

The Russia-made Tu-154M passenger plane carrying Kaczynski, his wife and a number of Polish high-ranking officials crashed in heavy fog as it attempted to land at an airfield near Smolensk, on April 10, 2010. None of the 96 people aboard the plane survived.

According to a report produced earlier by the Polish investigating commission, the pilots' erroneous actions could have caused the tragedy.