I've heard of this happening in the past and it simply amazes me. The same type of situation happened here in Iowa with Casey Fredrickson in the Evelyn Miller case. He had made a comment in jail about something only LE knew and it caused his arrest.
How can this possibly stand up in court though? How can a case be tried and convicted on that? I mean there are only so many ways a person can kill another...with shooting, stabbing, strangulation, drugging being probably the top 4. If they randomly say "yeah, they were shot"...and they HAPPEN to be right, how does that prove they were guilty?
I completely get what you're saying...I just don't know how they can honestly convict someone on something they said. And if that piece of information gets thrown out on a technicality (say it was illegally obtained) then what?
I don't know why, but for some reason the "they said something only LE knew" card just chaps my behind.
Now, if they go into DETAIL about how they were killed, that is different...but just saying "the girls were shot" is probably the most vague comment and I can't believe they actually would arrest someone on that...but hey, weirder things have happened I suppose.