Websome people in lake las vegas wonder if someone blasting in the area is the cause of a bright flash and powerful boom that shook houses on sunday. Weba puzzling loud boom and bright light took over the night sky over las vegas on april 25. The moment was caught on surveillance camera just after 11pm as houses shook. A loud bang was investigated in downtown las vegas near charleston and 4th street. Lvfr said it appears to be a trash can fire. Metro police said it was likely from a. Webfox5 heard back from las vegas fire and rescue bomb squad officials thursday evening. They tell fox5 they looked at the social media video, which shows a flash of light.