My wife is Ukrainian and reads Russian forums. On one of them, a lady from Rostov (somewhere in Russia) made an interesting claim.
She said that she worked for the local radio station and earlier last week there was a large explosion. Since then, a large portion of the population has gotten sick and the goverment has shut down all news services in the area (like her radio station). She wonders if there is something wrong with their nearby nuclear power plant...
Of course, none of the Russians on the board believed her, but you never know what may be true or not...