Russian dashcam footage is by many considered a class on its own. The footage caught on BlackVue DR550GW-2CH last week in southern Moscow, showing ; ;the moment and aftermath of an explosion in the Moscow Metro, is no different! The Moscow Metro has since tweeted that the incident was caused by ;a leaky gas canister used by workers repairing the station’s passageway. Various sources say there were at least six injured victims of the explosion. More videos from the scene atRT.