It is very unfortunate that we have POACHERS in our society ruining a great sport. I called the Game Warden in my area for the same thing just yesterday and they can't do anything unless I can prove who massacred 3 deer just a few days ago and dumped them like garbage down by the river where I've been hunting small game.
I will be keeping an eye out down here though and if I catch them, they will be one sorry SOB and I hope the Warden would treat them like the trash that they are!!
Good Luck to you! You need proof to prosecute!