Bots inside a wall in North Shroud

So I was minding my own business walking through North Shroud to get some mining done and all of a sudden I hear a bunch of casting and see about 8 fireballs come out and blow up a mob. I go to investigate and find out that I was not hearing things, but that there were 8 THM's sitting in the wall farming mobs. I have a screenshot of all their names and the coordinates of their location. I'm not sure if this is the place to post this, but I hope this gets checked out.

http://puu.sh/rw2sp/0b5f291309.jpg