Complex sentence: It has been suggested, for instance, that a gamekeeper (now deceased) was responsible for killing dogs in the wood; and regarding the aforementioned human deaths, it should be noted that only one of the bodies was found there.
Split into simpler sentences: It has been suggested, for example, that a gamekeeper (now deceased) was responsible for killing dogs in the wood. And regarding the aforementioned human deaths, it should be noted that only one of the bodies was found there.