Firefighters on hand as Washington DC building explodes

The moment a building in Washington DC exploded has been captured on video. Emergency services responding to the scene of the blast say there are no reports of any casualties. Police say one man received minor injuries and around 16 children at a nearby daycare centre were safely evacuated. The footage captured onboard a fire truck shows the moment the fireball tears through the convenience store and damages two other buildings. Firefighters were on hand before the explosion took place responding to reports of a gas leak in the building.