Idaho murder: Four student stabbed to death...and no SUSPECT.

https://www.foxnews.com/us/idaho-killer-methodical-quick-says-slain-students-mom
https://www.cnn.com/2022/12/13/us/university-of-idaho-student-killings-month-later/index.html

Anyone been following this? Its been nearly a month since the murder and still no new leads. They had interviewed a few people who were ruled out as suspect (two of which was in the house during the time of the murder), and is asking the public for help. I understand that Idaho Moscow is small town where the authority are low on resources but to come up this empty is surprising and that the parents are infuriated.

It was a premeditated murder where the killer knows its victim(s). Do you guys think the Moscow police are hiding something so not to interfere with the investigation or just poor work by them? I hope something positive comes out from all of this because I can't imagine being the parents.