First,Zazucat,soooo very sorry of your loss,I had to put my 16 yo kitty down in December,it was horrible.
Three years ago,when we moved,my cat jumped out of a window,and we never saw him again,it was devastating,personally I would like to think that someone nice found him,probaly not,but the thought that he was "attacked" would be too much for me,so I agree with most here,silence may be the best in this case,but,how nice of you to really think about your friends feelings