Unidentified attackers broke into a house at Moskovskaya Street on Sunday and shot down the grandfather, his daughter-in-law and also a neighbor who was in the house at that time. The wife of the head of the family was wounded, the police source said.
This is the latest crime in a series of similar incidents in the republic neighboring troubled Chechnya, which saw two Moscow-led military campaigns against separatist regimes in the 1990s- early 2000s.
In the early hours of July 16, ethnic Russian teacher Lyudmila Terekhina, 55, and her son and daughter were shot in their house in the town of Ordzhonikidzevskaya. Policemen said possible motives were robbery and nationalistic sentiments. At their funeral two days later a tripwire bomb went off leaving 11 people injured.
On August 31 unknown assailants broke into a house in the town of Karabulak and shot a Russian-speaking teacher's husband and two sons, 20 and 24 years respectively, with an automatic rifle.
The region is inhabited by a predominantly non-Slavic Muslim population.