Just thinking back to reports at the very beginning of this case. Homicide detectives were called in almost immediately and the sheriff did call the home a crime scene. (Granted, a kidnapping could also be called a crime scene, but it sounded like more. And I suppose the blood could have made them think that, but still.) They have never said what the inside of the house showed.
The very first TMZ article on this on February 2:
Per this article, the Pima County Sheriff's Office noted on their briefing today that,
"disturbing or concerning circumstances were found at the home, prompting homicide detectives to assist in the investigation."
Authorities in Arizona are searching for Nancy Guthrie, the mother of 'TODAY' anchor Savannah Guthrie, who was reported missing under what authorities are calling concerning circumstances.
www.tmz.com
And:
The motive remains a mystery. Investigators do not believe at this point that the abduction was part of a robbery, home invasion or kidnapping-for-ransom plot, the person said.
Searchers used drones and search dogs and were supported by volunteers and Border Patrol. The homicide team was also involved, Nanos said Sunday. The FBI has offered to help, sheriff's department spokesperson Angelica Carrillo said.
On Monday morning, Nanos said search crews had been pulled back.
"We don't see this as a search mission so much as it is a crime scene," the sheriff said.
Nancy Guthrie must be found soon because she could die without her medication, Pima County Sheriff Chris Nanos said Tuesday, urging whoever has her to free her.
www.pbs.org
Granted things have evolved regarding the no search, no kidnaping for ransom, etc., but he did call the home a crime scene. And they had no video at that time.