His Death is Still Unsolved

There was a confession from the married woman he'd been seeing and broke it off with (he was already engaged to another woman at the time of his death) but this was when she was old and suffering from Alzheimer's...
The film Hollywoodland was loosely based on his death.

He sure picked a random time to pick suicide. That's usually something someone likes to do in private and seclusion unless they're trying to make a statement. Japan literally had a big forest park for it.