The three are accused of shooting their Russian comrades - all marines - then going on the run with their army weapons.

Then in September 2004, Chechen militants took more than 1,100 people hostage at a school in Beslan. It ended in massacre as more than 330 people, around half of them children, were killed.

Russia's President Vladimir Putin lays flowers as he visits the destroyed school, where in 2004 Chechen militants took ... Russia to the 2004 Beslan school massacre, in which some 330 people ...