Hey everyone. I've just spent several hours reading through this whole thread. I am hoping that Kelly is found safe.
I'm an attorney, so I can shed a little light on the Miranda rights issue. As someone else already explained, you only have to be read Miranda rights if you are in custody and being interrogated. It's usually pretty clear if you're being interrogated or not. Where you find all the thorny legal issues is in the area of whether or not someone is in custody. On one end of the spectrum is, you've been placed under arrest, handcuffed, booked, and put in a locked interrogation room. Clearly, you are in custody. On the other end is the cops approach you on the street, explain why they are contacting you, ask if you are willing to speak with them, make clear that you are under no obligation to do so, and make clear to you that you are free to leave at any time. Clearly, you are not in custody in that situation. It is exceedingly rare for officers not to read Miranda in the first example. In my 12 years experience, I've seen it happen maybe twice. On the other, it's really an officer preference. A lot of officers never read Miranda in situations that are clearly not custodial; some will if they think the person they're questioning might be involved, just to be sure. But again, in the vast area in between where it's not black and white as to whether it is custody is where some officers err on the side of reading Miranda, while others won't. What determines whether someone is in custody? (Keep in mind what I'm talking about is general principles under Miranda and the US constitution and that case law. I don't know if WI has any state constitutional provisions or statutes that could potentially impose a more stringent standard. Most states do not.) It is a host of factors, but the key question is "would a reasonable person in that situation feel they were under arrest?" Sometimes, this is stated as "would a reasonable person under those circumstances feel free to leave?" but you can be detained, that is temporarily not allowed to leave, but not be considered in custody. Alright, so how do courts decide that? Well, they are supposed to look at a totality of the circumstances. Things to consider include whether they were in handcuffs, whether their movement has been restricted, whether they were transported from one place to another (to the police station, for example), have the police all but told them they are taking them to jail, the intensity of the interrogation etc. No one is absolutely determinative; it is the totality of the circumstances.
So, in this case, we know KZ was interviewed initially in his home. That is one factor that would point away from it being custodial. But we don't know nearly enough to know whether he was in custody for purposes of Miranda. Did they handcuff him? Did he ask them to leave and they all but refused, continuing to press him in an accusatory way? Did they say anything to him during the questioning that a reasonable person would interpret as the officers saying they're under arrest? All these things are essential to know.
Also, I just wanted to add that any lawyer worth his salt is going to challenge the search warrant in a case like this. You have to; it's your job. But the vast majority of defense challenges to validity of a search warrant are denied.
With all that in mind, it's way too soon to jump to a conclusion that LE "blew it" or "he's going to get off" or things like that.