Dankey

I was playing as a bounty hunter and a bounty was placed on a player named Vernon I then found him shot him and as soon as i did he killed himself apparently there was a person right in front of him which i could not see, he killed himself it hit the person named MarioKart I was then trying to explain my case but i wasn't allowed. I have video evidence showing my case. Why am i being warned for something that is so far beyond my reach. I was warned by someone named bubble buddies 21. Here's a link to the video proof- https://www.youtube.com/watch?v=jeKXRVdqPiw&feature=youtu.be