The vehicle had a dashboard camera, where a recording of a massacre of civilians was found. In it you can see people in uniform waiting in the dark in a countryside by a makeshift grave. When the second car arrives, a banderite greeting is exchanged: "Glory to Ukraine!" - "Glory to heroes!" (This is also a code for telling your own from the enemy.)
Then you can hear a person inside the car shouting "F$%ken dogs!" at the captured, while trying to get them out of the car. Three people are dragged out of the car and thrown into a mass grave, two males and one female. You can see the flashes of gunfire in the dark, after which the executioners shout "Glory to Ukraine! Glory to heroes" three times.