Unknown assailants stabbed a retired top police official to death in Russia's volatile North Caucasus Republic of Daghestan.
Daghestani police officials say that the former chief of the Khasavyurt and Kizilyurt city police, Aitemir Salimbereyev, was killed on July 9.
According to the officials, four armed men in masks rushed into a summer house on the outskirts of the central town of Kizilyurt, tied up Salimbereyev and his son, stabbed Salimbereyev, and fled.
Investigators say the murder may have been linked to Salimbereyev's activities as a police chief.
Before retiring in 2012, Salimbereyev led the branch of Daghestan's Counter-Extremism Center in Kizilyurt.
Daghestan has been plagued by violence linked to Islamic extremism and organized crime for years, with scores of people being killed and injured.
Based on reporting by Interfax and ITAR-TASS