Mysterious boom rattles thousands across Helsinki the capital of Finland

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A loud explosion-like sound was heard across many neighbourhoods of Helsinki late on Saturday night, but the source of the bang remained a mystery on Monday. The boom prompted discussion on social media, from people in the neighbourhoods of Oulunkylä, Kumpula, Käpylä, Arabia, Kulosaari, Metsälä, Meilahti and Kulosaari claiming to have heard the noise at […]

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