According to TASS, citing the words of the representative of the Kharitonov team, the athlete was hospitalized with a concussion.
It is noted that the cause of the incident was a domestic conflict.
Other details of the incident were not specified.
The 40-year-old Kharitonov's track record includes 32 victories and eight defeats in his professional career in MMA.
Kharitonov spent his previous fight on November 7, knocking out Briton Oli Thompson as part of the Parus FC tournament held in Dubai.
Previously, a video of Kharitonov's knockout in a fight with Thompson was published.