Or you could just look at the facts of the case (currently: no foul play suspected). Are the cops in on it? The morgue? The local city? How high does this go?
This isn't something which happened in isolation. This isn't "someone died". It's "someone died, and dozens of people are going to sign off that this obviously not a suicide was definitely a suicide".
Like, is that possible? Can you fake a suicide and leave no evidence you did? If you can then how many suicides aren't actually suicides but homicides? How would we know?
You're acting like it's a binary choice of probabilities but it isn't.