Unexplained white and blue flashes of light were spotted and filmed illuminating the night sky in the Russian city of Stavropol.
A dashcam video of the lights has left people debating the origins of the mysterious sight – which was filmed at 00:39 local time on Tuesday.
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The lights in the video made streetlights turn themselves off and woke many people up who observed the spectacle from their windows.
Local residents have come up with various theories to interpret the incident – military exercises that are currently taking place not far from the scene, faults in the electricity net, Northern Lights, an asteroid and even UFOs.
“I was very frightened by what I saw, I was already in bed. It looked as if something very bright lit up my ceiling,” a woman shared her experience on social media, Russian daily Argumenty i Fakty reported.
According to the Hydrometeorological Center of the city, the phenomenon “can’t be attributed to nature”– rather, it could be anthropogenic. The source of the light is thought to have been located somewhere on the ground.
However power engineers have rejected a version suggesting a fault in the power supply line leaving the public clueless about the nature of the mysterious flash.