(Longtime lurker, new poster, as I have some experience in this matter).
There's likely not a single "police report" that covers the entire case, especially considering the suspect was killed.
It may be done slightly differently in California, but in my state (Pennsylvania) police file a publicly available "affidavit of probable cause" when charging a suspect. That document wouldn't include precise details of say, a forensic investigation, but is instead meant only to provide enough evidence to file charges. When the suspect is dead, no such document is filed.
When the suspect is dead, the most informative documents would probably be a coroner's report (which details cause of death, etc.) and possibly search warrant returns (which, if released to the public, would reveal officers' findings from searching, say, the suspect's home).
Unless it's done in a wildly different fashion in California, you probably won't find a publicly available document that describes forensic evidence in great detail.