Russian nightclub fire: At the scene of blaze that left at least 13 dead

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At least 13 people have died after a fire broke out in a busy nightclub in Kostroma, Russia.

According to state media, investigators believe a man fired a flare gun while inside the club.

Rescuers said 250 people were evacuated from the building.

Read more: Deadly fire in Russian bar started by 'flare gun'