Air disaster near Smolensk: no accident?

Polish prosecutors have discovered traces of explosives on the wreck of the Polish presidential jet which crashed near Smolensk, Russia on April 10 2010, killing then President Lech Kaczynski and 95 other people.
As Poland did not give its confidence in the result of the pyrotechnic tests conducted by Russians the delegation of Polish experts headed for Russia to examine the wreckage one more time.
“Tests have confirmed the presence of TNT and nitroglycerine on 30 seats. The substances were also found on the area linking the fuselage with the wing,” Polish newspaper Rzeczpospolita daily reports. Although the delegation returned home two weeks ago the information has leaked to the press only today.
At the moment experts and politicians are trying to decide what is to be done. There still has been no explanation what way the explosives got into the plane.
The presidential delegation had been bound for a memorial ceremony in Katyn, for thousands of Polish army officers killed by the Soviet secret police in 1940, a massacre denied by the Kremlin until 1990.
See also