According to the agency, a 15-year-old teenager from the aimak (province) Gov-Altai in the south-west of the republic died. Analysis showed that the plague was the cause of death.
As noted, a few days before his death, the young man, along with friends, ate a dish of tarbagan meat - the Mongolian groundhog.
Authorities quarantined about 20 people in contact with the infected.
Previously, the WHO said that the spread of bubonic plague in Russia is extremely unlikely.