Well, that’s the thing: there’s not that many evidence from specific points. Imagine having relatives in Efremov or Novocherkassk, knowing that sometimes there’s fighting between Wagner and army or FSB, and not being able to tell if there’s any risk for your family. Tracking such a big force on your own turf should have been an easy task for MVD or FSB. Maybe even for some big newspapers. Visual ID, plates etc. At least some Wagner vehicles were easily recognizable.