Petr Polshikov, 56, was discovered with a bullet injury to his head at his flat in Moscow`s Balaklavsky Prospekt, according to local media.
Two shells were allegedly found alongside a gun under the kitchen sink. The wife of the man, who has not been named, is said to have been at the apartment.
The circumstances of the incident remain unclear, and it is understood police are examining all possible theories as to Polshikov`s death.
Two empty bullet shells were found in the flat on Balaklavsky Prospekt. The Kremlin has not confirmed or denied the reports.
Some reports say he had left the Foreign Ministry, but it is unclear if he worked for any other branch of the Russian government.
He had served previously at the Russian embassy in Bolivia.
