It looks like “sources” told ABC News that the lead investigator, Chris Serino, “didn’t believe the story” and that he wanted Zimmerman charged. Do you know if we have anything more concrete than the ABC News article with anonymous sources? I have been unable to find anything, and I tend to doubt the veracity of their claim.
It doesn’t matter imo. Prosecutors are trained in the law, and qualified to make the call. Police aren’t. Investigators often want cases pursued that DAs don’t.
Nothing that I am aware of, and I spent a good couple hours looking. I speculated that Serino's affidavit was some novel legal theory, that getting out of a car and following amounts to "Initially provokes the use of force against himself or herself." Pure speculation on my part.
An alternative, and what I have read, is that he did not believe Zimmerman's story. This leads to a different line of speculation on my part, that if Serino doesn't believe Zimmerman, it is because Zimmerman's story is too pat - that he was too restrained, too perfect, etc. That he HAD to have said or done something to get Trayvon to snap. And, rather than make the call at this stage, he'd send it to the jury.
DA has a different point of view of the law, including the onus of a bogus prosecution. It is the DA (Nifong) who gets slammed for wrongful prosecution, not the investigator.