If someone private did it, there was certainly nothing published as far as a study or any approved release by the IDNR. That would be a matter of public record and would require approval from the commission. In other words, if someone did it privately, they did it by illegal means without any approval from the "powers that be". I love yote hunting and grew up Bobcat hunting so I follow all that kind of stuff very closely. And BTW, yep cats can and do relocate. They aren't typically "roamers" per say but when the food gets scarce they can and will move good distances and often times there will be quite a few cats moving at once.