A lot of unnamed sources making a lot of unsubstantiated claims in this case. What has LE actually said?
She died somewhere around 12:40 am, They have video at 4:30am of the person carrying her in the duffle toward the park, 2 people called them to report the bag at ~8-8:30am, she was stabbed dozens of times, perhaps close to 60, she had defensive wounds, there is blood on the first floor and basement at least, they took the son into custody but released him quickly, they are looking for a few male contacts that she was communicating with, they haven't been able to speak with one of them, a handyman, there was no sign of forced entry, they recovered bloody boots at the scene; that is pretty much it. The rest has come from unnamed sources and may or may not be true. We watched on video them searching upstairs and removing items, possibly a PC from the home.
What does it mean?
-Somehow they know the time of death accurately enough to say 12:40 vs between 1am and 4am (if that is a fitness tracker they have access to her phone/apps)
-They know the son didn't do this (do they have enough video to exclude him, no blood in or up to his room, other alibi?)
-They have access to her phone contacts and texts (do they have her phone or just her records?)
-They can't find one of the male contacts but curiously don't need the public's help because they aren't releasing his name (this is incriminating on the face of it but he could also be on vacation and they must not be 100% sure he is involved)
-They have spoken to the other male contacts and are not concerned about them.
-they have confirmed what she was doing that night, who she was with, has questioned them, and are not concerned.
What are they not doing-
Searching the whole park, the backyards, or anywhere else (at least the press isn't onto it)
Executing search warrants at other locations
Asking for the public's help in locating anyone
Giving press conferences or written statements
This usually means they have a good idea what happened, who was involved, and are doing the legwork to put everything together
Fingers crossed...