Local residents in social networks suggested that it could be a UFO or a burning plane.
A meteorite that fell into the Earth’s atmosphere could burn, but in this case, with a high degree of probability, an explosion would have occurred, which was not observed.
“Too slow for a meteorite, to me that looks like very slow space junk or a plane high up with the sun lighting up the contrail”, wrote one user.
“This is not a plane as planes fly horizontally. I’m very familiar what jets looks like at sunset. This would be far bigger. And it’s nose diving”, wrote another commentator who introduced himself as a pilot.
So far, there is no explanation for this phenomenon.