So, where and how did the phone turn up? Who found it? Where did they find it? How did they know it was his? I rather doubt a phone found on the street would have been turned in and 99.99999999% wouldn’t put two and two together that it was his phone. Most likely it was “found” at his home or office which should aid investigators to when and how he was taken.
I suspect he was taken either as a scare tactic or a kidnapping. I suspect he was given drugs or was tortured which caused the confused mental state observed by the witnesses. The bad guy/s finally found him again and murdered him to cover the initial crime. All this talk about the neighbor may be LE’s way of diverting attention away from the real suspects hoping they will slip up.
Phone was found in the underconstruction house across the street.
What were the last phone calls and when?
We don't even know if it was active...