The Polish foreign minister has thanked...
A Soviet-made TU-154 carrying President Lech Kaczynski hit the top of trees as it attempted to land at an airport in the west of Russia in thick fog on Saturday morning, killing all 96 people on board.
The Polish leader and other top government officials were en route to a ceremony in Katyn to pay tribute to some 20,000 Polish officers killed by Soviet secret police during World War Two.
"Poland has expressed its gratitude to the Russian authorities for offering aid following the air crash," the ministry said.
The ministry said the statement was made by Polish Foreign Minister Radoslaw Sikorski during a phone conversation with his Russian counterpart Sergei Lavrov on Sunday.
"Radoslaw Sikorski thanked the [Russian authorities] for assistance to the relatives of those killed in the disaster," the ministry said.
Russia is holding an official day of mourning for the crash victims. Muscovites have been bringing flowers and candle to the Polish embassy.