From The Guardian:
The Chechen rebel leader who claimed responsibility for the Beslan school massacre and the Moscow theatre siege has been killed, Russian media reported today.
Russia’s Itar-Tass news agency reported that Shamil Basayev, who led the most violent wing of the Chechen separatist movement, had been killed overnight in the Russian republic of Ingushetia, to the west of Chechnya.
Here.