Ransom demanded for two UTair staff seized in ambush on UN contract work.
Police save the child from clutches of man, 40, with another version that she was to be 'sold for human organs' on black market.
Tomsk honours the memory of the child and police hunt the vicious killer.
Criminal cases launched against pair recruited to Syrian terror groups affiliated to Islamic State.
Radicals planned attack in Pyt-Yakh in Khanty-Mansi region two years ago.
One convict Mikhail calls it 'brilliant relaxation' and warders say yoga leads to better behaviour among inmates.
Businessman has spoken candidly over the controversial events of the 1990s, admitting he paid protection money to criminal gangs.