Blaze and gas explosion near Tyumen kills five children aged under nine years of age.
Night blaze engulfs Siberian centre despite prompt response by fire service.
Premier Dmitry Medvedev launches inquiry into the tragedy which leaves almost 600 injured.
The child victims were aged between 18 months and seven years and perished in a wooden one-storey house in Yelovoye village in Krasnoyarsk region.
Southern Siberia hit by punishing flames causing death and destruction.
Russians grieving over damage to magical forests surrounding Siberia's jewel.
Charred corpses removed from wreckage in Kemerovo with evidence that victims were trapped inside by locked fire doors.
Up to 38 people trapped in building as rescue underway.
Most fires will not be extinguished, with major cities polluted by fumes.