BELGOROD, January 27. /TASS/. The wife of a doctor filmed beating a patient to death in the southern Russian city of Belgorod has filed a complaint about online threats, local police said on Wednesday.

But investigators say there can be no inquiry since the complainant cannot identify alleged menaces as coming from real people.

Closed circuit TV showing surgeon Ilya Zelendinov beating a patient over the head went viral on YouTube in early January and was broadcast by state television. The man then collapsed and died later, postmortem examination revealing that head injury caused the 56-year-old's demise.

The doctor was dismissed and arrested on January 12, charged with causing grievous bodily harm and facing up to 15 years' jail on conviction.