Nancy Guthrie's family marked 100 days since her disappearance in Tucson, Arizona, on Monday, as daughter and Today show host Savannah Guthrie publicly vowed that they will 'never stop looking' for the 84‑year‑old, who investigators believe was abducted from her home in the Catalina Foothills in the early hours of 1 February.

The Pima County Sheriff's Department, working with the FBI, says the Nancy Guthrie case remains active but has yet to identify a suspect, a motive or even confirm whether she is still alive.

The Nancy Guthrie case took on a fresh, painful significance over the weekend, with Sunday marking the first Mother's Day since her disappearance.

Michael Feldman, Savannah Guthrie's husband, posted a photograph of Savannah with their two young children on Instagram, writing: 'To the strongest person I know. Surrounding you with love on Mother's Day,' followed by heart and broken‑heart emojis.

Savannah Guthrie, who had taken more than two months off from the Today show to focus on the search, has used her profile to keep her mother's case in the public eye.

In an emotionalMother's Day video shared online, she described Nancy as 'Mother, daughter, sister, Nonie' and said the family 'miss you with every breath.'

She added that they 'will never stop looking' and 'will never be at peace' until she is found, urging anyone with information to contact law enforcement. The post quickly drew messages of support and prayers from viewers and public figures.

The basics of the Nancy Guthrie case are still stark. On 10 February, the FBI released doorbell camera footage from Guthrie's home, showing what it described as a masked, armed individual at her front steps on the morning she disappeared. In a separate clip, a man in similar clothing appears approaching the house roughly three weeks earlier. Neither has been publicly identified.

Inside the home, investigators collected what they have called mixed DNA, including a hair sample. According to Fox News Digital, that hair was sent late last month from a private forensic lab in Florida to the FBI for more advanced analysis.

Experts quoted by the outlet said that if the hair does not match relatives, staff or others who have already given voluntary DNA samples, it could be used in forensic genetic genealogy to narrow in on a possible suspect.

Source: International Business Times UK