Recently, bright blue light startled residents of Stavropol, a southern city of Russia. Some people think that the light may have caused due to a UFO crash.

The strange light flash did not make any noise but illuminated the night sky above the city on March 17. Experts are unable to explain the bizarre phenomena, but they suggest that the light flash was not natural.

"It wasn't a meteorological event. There wasn't a storm. More likely it is something made by a human being," says Natalya Klimenko, an analyst at the Stavropol Meteorological center.

Eye witnesses reveal that the light flash resulted in bulbs in many areas to flicker and street lights to briefly turn off.

Various theories soon started emerging after the weird occurrence.

Stavropol houses Russia's 49th Army, which is headquartered in the Institute of Communications of the Strategic Rocket Forces. A few days before the lighting flash, the Russian department had admitted to having launched some military exercises in the south of Stavropol. Some people believe that the military exercise involved rocket launching.

In July 2014, a strange crop circle appeared in the nearby Krasnodar region. The mysterious markings were about 40 meters wide and appeared in a local sunflower field. At that time, some locals also reported that they saw an unidentified object that was rising from the ground. Residents at that time believed that the unidentified object may have been an alien craft. People suggest that the latest light flash may have also been a work of aliens.

"It's a kind of photo-flash. They were photographing the city," says Sergei Pakhamov, a UFO-ologist, told local state TV station.

This is not the first time that such a bizarre incident has happened in Russia. In February 2013, a meteorite entered the Earth's atmosphere over Chelyabinsk in Russia and exploded. The explosion was so powerful that it shattered many windows in the city. In 2014, a huge meteorite blast changed the color of the sky to orange over Siberia.

However, scientists suggest that a meteorite was not behind the latest light flash seen over Stavropol.

Another theory suggests that the mysterious light may have been caused by Northern Lights that were seen over parts of Russia in the same week. However, the theory is questionable as the Northern Lights would not be visible as south as Stavropol. Moreover, the light appeared just as a flash and Northern Lights are normally visible for a relatively longer time than just a flash.

Check out the light flash over Stavropol that was recorded by a car's dashboard camera.

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