The search for 84-year-old Nancy Guthrie, the mother of “Today” host Savannah Guthrie, began after she was abducted from her home near Tucson, Arizona, on Sunday, Feb. 1, authorities said.

The Guthrie family has made multiple public pleas for any information surrounding their missing mother.

Timeline of Nancy Guthrie’s disappearance and investigation
Investigators believe Nancy Guthrie was abducted in her sleep early on Feb. 1, according to the sheriff’s department.

1:47 a.m.: Nancy Guthrie’s doorbell camera disconnected, the sheriff said.

2:12 a.m.: The camera software detected a person on camera, but no video is available, the sheriff said.

11:56 a.m.: Relatives responded to Nancy Guthrie’s home and discovered she was missing, the sheriff said.

12:03 p.m.: The family called 911, the sheriff said.

Click here for a full timeline of the case.

Police tent briefly set up at Nancy Guthrie’s home

Investigators arrived at Nancy Guthrie’s home on Thursday morning to briefly erect a white tent — typically used for privacy — outside her front door.

Investigators took the tent down after about an hour and drove away in unmarked vehicles with a large pelican case labeled “video forensics.” They also carried what appeared to be a laser measuring device.

Savannah Guthrie posts old home video: ‘We will never give up on her’

In a new Instagram post on Thursday, Savannah Guthrie shared an old home video from her childhood, showing her and her sister with their mother, Nancy Guthrie. The video is followed by a still photo of all three siblings with Nancy Guthrie.

“[O]ur lovely mom,” Savannah Guthrie wrote in the caption. “we will never give up on her. thank you for your prayers and hope.”