An incredible flying saucer photographed in Russia

On April 2013, two schoolgirls have photographed an incredible unidentified flying object in the city of Khakassia (at the South of Russia).

Eyewitnesses have firstly seen clearly something of strange in the sky. Then, they have taken a photo where appeared a truly flying saucer. Object looks like a grey-blue ball-shaped pastille.

This photo has succeeded to interest local television. What is it? Aliens visitors? An optical illusion? An hoax? Or something else? Anyway, the two girls have no doubt that they had seen a UFO.