Deadly fires are common in Russia because of wide-spread violations of fire safety rules.

NPR: 38 Die In Mental Hospital Fire Outside Moscow

The fire spread quickly through the two-storey building, damaging the roof, ground and first floors of the house, along with cars parked on the driveway.

BBC: Milton Keynes: Arson probe after seven escape fire

Moscow region governor Andrei Vorobyev told Russian state-television that the fire alarm seems to have worked but the fire spread too quickly.

NPR: 38 Die In Mental Hospital Fire Outside Moscow

The fire started on the ground floor - which was reportedly used as a warehouse - and quickly spread through the building.

BBC: Dhaka Bangladesh clothes factory fire kills more than 100

This covers not only teenaged boys, getting a thrill by watching a fire take hold and spread, but those motivated by the "hero factor" - people who want to be involved and to take the credit for fighting the blaze.

BBC: NEWS | Europe | Inside the mind of the fire starter