Feffe is in no way using any hacks, and isn't really abusing admin rights. Me and 2 mates had been killed around 30min~ before what you are describing by a hacker(possible names "B " or "Shaft", and I respawned next to 2 of the 3 vehicles you described here(the blue truck and UAZ). Since we had lost around 6 weapons, 20 blood packs, pens.. you name it we decided to take those vehicles since they had a lot of loot in them(mostly ammo), drive to where we died, and recover what we could from that and regroup at our camp. However on the way we were chased by the black SUV, he though we were the hackers since we were using the 2 spawned vehicles and a helicopter we had seen next to the road. After around 10-15min of convincing them that we hadn't really hacked/spawned/cheated in any way, and wouldn't mind if they took the cars, we got off the hook and were on our merry way with the agreement that we would not do any player killing for the next hour while they were trying to figure out who that was. So after we started driving in different directions, we suddenly saw exactly the same message "hvem faen var det????" as you edited out of your OP. I guess that in the end was you killing them as our chats all had them dying in it right before. So all in all, he's only trying to fix what hackers had already done.