This was reported by the Investigative Committee of Russia in Telegram.
It is noted that the media published information that the mother of the deceased expressed disagreement with the conclusions of law enforcement agencies regarding the death of her son.
"It is reported that he was taken to the medical facility where the young man's death occurred, he was taken with a knife wound, but the cause of death was a disease, the signs of which were not seen in him during his lifetime," the report says.
Earlier, a boy who went cycling in the village of Yaratkulova near Chelyabinsk was found dead in a pond.