OK...hold on for a minute. That was a bizarre PC. I have faith in LE to a considerable extent. But we don't know the reasons or circumstances here. Maybe the mom and dad are so angry or upset or losing it, they got mad at some cop and just lost it. Maybe something the cops said or did upset them. Maybe they felt "accused" and just said "no more!" We don't know. "Decided to stop cooperating." That's a potentially loaded phrase. Young was obviously pissed. But didn't know the answers to a number of questions.
I say we should withhold judgment. There's more to learn. Take it easy. This does NOT mean the parents are guilty of anything. Other perhaps than being torn and emotional. It doesn't mean the opposite, either. We need more info.