It happened twice in a day. First I tough I had been sniped because I was in a pretty open spot but the second time, as you can see in the video above, I was just exiting a building, It was not a place where I could have been sniped and I was moving too. No gunshot either. It's pretty clear that I did not die from a player.
P.S. I tried to upload the video directly but It was too big, so don't mind the file I uploaded. It's a empty .txt doc.