Police in the southern Russian city of Kislovodsk said a fight involving at least 15 people on July 21 left at least two people dead and four others injured, one seriously.
Police said the fight broke out at around 6 p.m. local time and those involved used knives and pellet guns.
Those reported killed and injured all suffered from multiple knife wounds.
Police are now trying to determine the cause of the fight and apprehend those who took part.
Based on reporting by ITAR-TASS and Interax