Interfax reports.
According to preliminary data, a car Lada Priora drove into the oncoming lane and collided with a regular bus en route from Pyatigorsk to Makhachkala.
As a result of the accident, the driver and three passengers of the car died at the scene of the incident.
In September, a collision between a truck and two cars in the Derbent region of Dagestan killed five people.