"Russian and Polish officials said there were no survivors on the 26-year-old Tupolev, which was taking the president, his wife and staff to events marking the 70th anniversary of the massacre in Katyn forest of thousands of Polish officers by Soviet secret police.
"The cause of the plane crash was apparently an error by the crew during the approach to landing," Russian state news agency RIA Novosti quoted an unnamed official in the Russian region of Smolensk, the area where the plane went down.
Authorities said they found Kaczynski's body and both black boxes at the site of the crash.
The crash devastated the upper echelons of Poland's political and military establishments. On board were the army chief of staff, national bank president, deputy foreign minister, army chaplain, head of the National Security Office, deputy parliament speaker, civil rights commissioner and at least two presidential aides and three lawmakers, the Polish foreign ministry said.
Although initial signs pointed to an accident with no indication of foul play, the death of a Polish president and much of the Polish state and defense establishment in Russia en route to commemorating one of the saddest events in Poland's long, complicated history with Russia, was laden with tragic irony."
-Fox News