Ellen Boyd

Pima County investigators say Nancy Guthrie left behind her keys, wallet and phone and that traces of her blood were found at her Tucson area home.

For much of February, reporters and online content creators crowded the neighborhood, but since county officials imposed a temporary street parking ban near the home, neighbors say it has grown quieter.

Authorities continue to ask residents for surveillance video and tips.

The most significant development has been the recovery of security footage that shows an unidentified masked and armed person approaching Guthrie's doorstep the morning she disappeared.

Savannah Guthrie says the family is offering a $1 million reward for information leading to her recovery.

For NPR News, I'm Ellen Boyd in Tucson.

Video and still images show an unknown person approaching Nancy Guthrie's doorstep and tampering with the front door camera the morning of her disappearance.

The person appears to have a handgun in a front holster, a front zip hoodie, and a backpack.

They appear to hold a handful of leafy branches in front of the lens after ripping a handful from Guthrie's yard.

FBI and Pima County officials said the agencies have been working to recover any images or video from Guthrie's home that may have been lost or corrupted.

Sheriff Chris Nanos previously said the footage was not available.

Officials said the video was recovered from residual data located in back-end systems.

For NPR News, I'm LM Boyd in Tucson.

Officials say Guthrie came home just before 10 p.m.

Saturday.

Her doorbell camera was disconnected around 2 a.m.

After that, Guthrie's pacemaker disconnected from the phone.

Officials say blood found outside the home belonged to Guthrie.

And FBI Special Agent Heath Yonke confirmed that ransom notes sent to news outlets are being taken seriously.

FBI confirmed that there was a ransom deadline.