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Published on Jul 16, 2015
Black smoke was pouring from the top of a construction site as the person begins filming. But seconds later a large explosion can be seen and a fireball shoots up with witnesses sent running in different directions. The footage was captured in the Swiss town of Olten. Police say no-one was injured in the blast. http://www.telegraph.co.uk/news/world... Blitz: "a sudden energetic eruption"