The disappearance of 84-year-old Nancy Guthrie from her home in Tucson, Arizona, on Sunday, February 1, has triggered a massive search operation and drawn significant criticism towards the Pima County Sheriff's Office and Sheriff Chris Nanos. A week into the investigation, law enforcement has yet to identify a single suspect or person of interest, prompting public scrutiny over their handling of the case.

Sheriff Nanos initially stated on Monday that Nancy was 'abducted' and 'taken from her bed,' a claim he retracted the following day, clarifying he spoke figuratively and lacked literal evidence. This blunder was followed by a criticized press conference on Thursday where Nanos admitted to having no suspects. Sources within his department also alleged critical mistakes in the early hours of the investigation, including the failure to deploy a vital search-and-rescue aircraft equipped with thermal imaging cameras for approximately half a day due to staffing shortages, a lapse supervisors and deputies associations blamed on Nanos.

The crime scene at Nancy's $1 million home in the rural Catalina Foothills has also been a point of contention. Critics point to the fact that crime scene tape was put up and taken down multiple times, leading to concerns about potential evidentiary issues. Police returned to the scene on Friday, seizing a vehicle from her garage and a camera from the roof that had been missed in previous searches. This latest search was prompted by a crucial tip from neighbor Laura Gargano, who noticed Nancy's roof appeared suspiciously pristine and newly recoated despite recent rains, suggesting recent activity on the property.

Nancy Guthrie, who is 84 years old, has a pacemaker and requires daily prescription medication, making her disappearance particularly urgent. Her doorbell camera was disconnected, and her pacemaker was disconnected from her phone in the early morning hours of February 1, with blood also found on her door by authorities. The investigation is operating under the assumption that she was removed from her home against her will and is still alive, a belief Sheriff Nanos has reiterated.

Complicating the investigation are multiple alleged ransom notes sent to news outlets, including Tucson's KOLD News 13 and TMZ. These notes reportedly demanded millions of dollars in Bitcoin to a specific crypto wallet address and included deadlines, with one deadline already passed and another set for Monday, February 9. A second ominous message was received by KOLD on Friday. However, private investigator Clarke expressed skepticism about the legitimacy of these notes, noting the 'rookie' mistake of sending them to news outlets instead of directly to the Guthrie family. The family, including daughter Savannah Guthrie, has made multiple emotional pleas for Nancy's safe return but has not been directly contacted by anyone claiming to have her. The FBI is investigating the validity of these notes, treating them as serious leads, while also exploring the traceability of Bitcoin transactions.

In response to the ongoing search, the FBI has launched a digital billboard initiative, erecting signs across major Southwestern cities like El Paso, Phoenix, Los Angeles, Houston, San Antonio, Albuquerque, and San Diego. These billboards display Nancy's photo, age, height, and weight, along with an FBI tip line, to solicit public assistance. Additionally, a California resident, Derrick Callella, was arrested for allegedly sending false ransom notes to Nancy's daughter and son-in-law, and a 'vehicle of interest' was identified through surveillance footage at a local gas station.