A plane carrying Polish President Lech Kaczynski has crashed near a Russian airport, officials say.
Russian media reported that 87 people were killed in the crash, but it is not yet known if anyone survived.
The plane was reportedly heading to an airport in the western city of Smolensk when it crashed.
Mr Kaczynski was due to visit Smolensk to mark the 70th anniversary of the Katyn massacre, when Soviet troops killed thousands of Poles
He was on his way to the Katyn memorial.
I'm heading to the shops to stock up on tin foil...