Nancy Guthrie Update – As the search enters its fourth heartbreaking week, the FBI is ramping up efforts: more neighbor videos are pouring in, fresh tips keep flooding the lines, and investigators refuse to slow down.

“We still believe in a miracle,” Savannah Guthrie said in a video this week announcing a $1 million reward for her 84-year-old mother’s recovery. “We also know that she may be lost. She may already be gone.”

Kate Murphy, Dylan Stableford, Mike Bebernes, Neia Balao, Andrew Romano

Updated 

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A photo released by the FBI of a person captured by Nancy Guthrie’s doorbell camera, and Savannah Guthrie and Nancy Guthrie on the Today show set in 2015.
(Photo illustration: Yahoo News; photos: FBI via AP, Don Arnold/WireImage via Getty Images)

The desperate search for Nancy Guthrie is nearing the end of its fourth week, with officials preparing to release her home and the family of the 84-year-old offering $1 million for information leading to her “recovery.”

Savannah Guthrie announced the reward on Tuesday in an Instagram video, saying the family is holding out hope that Nancy Guthrie is found alive, but acknowledged she may already be dead.

“We still believe in a miracle. We still believe that she can come home,” the Today show cohost said. “We also know that she may be lost. She may already be gone.”

“If this is what is to be, then we will all accept it,” Savannah Guthrie added. “But we need to know where she is.”

Nancy Guthrie was last seen at around 9:45 p.m. on Jan. 31, when she was dropped off at her home in the Catalina Foothills north of Tucson, Ariz., by family members following dinner, police said. She was reported missing around noon the next day after she did not show up at a friend’s house to watch an online church service.

Authorities are still waiting on results from an analysis of partial DNA recovered from Nancy Guthrie’s home. The Pima County Sheriff’s Department has said that “this will remain an active investigation until Nancy Guthrie is found or all leads are exhausted.” But no arrests have been made, and no motive has been identified for Guthrie’s possible abduction.

Officials say they have received tens of thousands of tips since the investigation into her disappearance began.

Anyone with information is encouraged to call the Pima County Sheriff’s Department tip line at 520-351-4900 or the FBI tip line at 1-800-CALL-FBI.

Live coverage is over103 updates

Dylan Stableford

Dylan Stableford

Timeline of key developments in the search for Nancy Guthrie

An aerial view, of Nancy Guthrie's home on Feb. 25.

An aerial view of Nancy Guthrie’s home on Feb. 25.
(Joe Raedle via Getty Images)

It’s been nearly a month since Nancy Guthrie was reported missing from her home near Tucson, Ariz. Police believe that Guthrie, the 84-year-old mother of Today show cohost Savannah Guthrie, was abducted.

Jan. 31

Nancy Guthrie is last seen around 9:45 p.m. when she is dropped off by her family at her home in the Catalina Foothills north of Tucson, Ariz., after having dinner with her daughter, Annie Guthrie, who lives nearby.

Feb. 1

Nancy Guthrie’s pacemaker stops syncing with her Apple devices at 2:28 a.m., according to police. She is reported missing around noon after she did not show up at a friend’s house to watch an online church service.

Feb. 2

Pima County Sheriff Chris Nanos says police believe Nancy Guthrie was kidnapped and didn’t leave her home on her own.

Feb. 4

Nancy Guthrie’s adult children post an Instagram video addressing a possible ransom video, saying that the family is ready to talk but needs proof that their mother is alive.

Feb. 10

The FBI releases video and images of what it said was an “armed individual” appearing to tamper with a doorbell camera at Nancy Guthrie’s home in the early morning hours of Feb. 1.

Authorities detain and later release a delivery driver after carrying out a “court-authorized search” of his Rio Rico, Ariz., home. He tells reporters: “I hope they get the suspect, because I’m not it.”

Click here for a full timeline of key developments in the investigation.

Dylan Stableford

Dylan Stableford

Sheriff’s department says it is ‘refocusing resources’ in the Nancy Guthrie case

A yellow ribbon is displayed in front of  Nancy Guthrie's residence

A yellow ribbon is displayed in front of Nancy Guthrie’s residence.
(Joe Raedle via Getty Images)

The Pima County Sheriff’s Department has announced that it is refocusing its resources to detectives specifically assigned to the Nancy Guthrie case.

“This remains an active investigation and will continue until Nancy Guthrie is located or all leads have been exhausted,” the sheriff’s department said in a case update on Friday, adding that “resource allocation may fluctuate” in the search for Guthrie, who was reported missing on Feb. 1.

Police confirmed reports that investigators “actively reviewing surveillance video of vehicles traveling in the Catalina Foothills area,” including footage of a vehicle taken from a Ring camera about 2.5 miles away from Guthrie’s home.

The sheriff’s department said it has “asked homeowners in the surrounding community to submit any relevant footage and encourage anyone who has not yet done so” through a dedicated link on its website.

Dylan Stableford

Dylan Stableford

Savannah Guthrie shares new video: ‘Tips can be anonymous, reward can be paid in cash’

Days after announcing her family’s $1 million reward for information leading to their mother’s “recovery,” Savannah Guthrie shared a video on Instagram Friday of a Today show report about how to submit an anonymous tip to the FBI.

“Please — be the one that brings her home,” Guthrie wrote in a caption. “Tips can be anonymous, reward can be paid in cash, as explained here.”