//Russia explosion: Huge blast rips through gas station in Volgograd, injuring at least 13.

Russia explosion: Huge blast rips through gas station in Volgograd, injuring at least 13.

At least 13 people have been injured after a fire sparked a huge explosion at a gas station in southwest Russia.

Footage of the blast showed an enormous fireball shooting into the sky over the city of Volgograd.