His family is suffering greatly. Any speculation that his death was caused by means of murder could only further that pain. It is useless speculation at best. The toxicology report and final autopsy will be released in May. I suggest we wait for the final results.
You think his grieving family is reading this thread? No? Then why do you have a problem discussing it? ANd did you read that there are methods to kill people that are undetectable? They really exist? Not fantasy.