Copenhagen experienced a “flash of white light then bang” yesterday early morning no one knows the cause of.<p><a href="https://www.reddit.com/r/copenhagen/comments/13hq2dw/what_was_the_blast_sound_could_hear_it_in_valby" rel="nofollow">https://www.reddit.com/r/copenhagen/comments/13hq2dw/what_wa...</a>