Wow, that was pretty thorough, thank you for posting it. So all four individuals "have first-hand knowledge" of the abduction of Michael. So someone in that house kidnapped and killed Michael and the others either 1) knew, 2) were also involved, or 3) learned after the fact and failed to report it.
It is interesting that they are not singling out any one person. Would they release the names of the other two "involved" people without first locating and arresting them if they thought one of them was the actual murderer?