I'm so sorry that you have to add this to your list of worries. In the country the shooting of animals is common practice where I live. If they say that a cat came onto their property and was killing or disturbing thier chickens then the law won't do anything about it. I'm sure this is what they would say happened if they admitted it at all. They probably don't even know what the cats look like that they shoot because they don't care and have no regard for the lives of innocent animals!! I don't think it will hurt to go talk to these people but I don't think you'll get anywhere. I really think it would be a waste of time but you won't know for sure until you try. I hope and pray this is not what happened to Mystic!
We will keep praying for Mystic's safe return and if that is not God's will then we pray you will at least find out where he is or what happened to him.