Nancy Guthrie Case: Pima County Sheriff Claims Police Are Close to Solving Savannah's Mom Case After Nearly 100 Days

Pima County Sheriff Chris Nanos claimed the police department is one step closer to finding out what happened to Nancy Guthrie.

The 84-year-old mother of Savannah Guthrie has been missing since February 1 and was last seen at her home in Catalina Foothills in Tucson, Arizona.

Nanos was asked by Fox News on Friday, May 8 if cops were nearing a conclusion to solving Nancy's disappearance.

"We are," he simply stated, adding the developments in the case are "really great."

No suspects have been identified yet despite analysis of evidence such as gloves, DNA samples and camera surveillance photos.

Nanos has been criticized for his handling of Nancy's vanishing, with calls for him to be ousted from the police department continuing to rise in recent weeks.

Two Pima County supervisors are preparing to file a motion to declare the sheriff's office vacant if Nanos does not resign by Tuesday, May 12.

That day will mark 100 days since Nancy vanished from her home.

"He has definitely lost the confidence of the community. He's embarrassed himself, and it's time for him to go," Pima County Board of Supervisors member Dr. Matt Heinz told CBS News on Friday.

"The Pima County Sheriff's Department remains fully committed to the investigation into Nancy Guthrie's disappearance," the police later said in a statement.

"This is an active and ongoing investigation, and we continue to work closely with our partners at the FBI," the department continued. "DNA and video analysis are underway, supported by laboratories across the country. Advances in technology are aiding investigative efforts, and tips continue to be received and reviewed."

"We appreciate those who have come forward and urge anyone with credible, actionable information to contact investigators. Even small details may be significant," they added.

When Nancy first disappeared earlier this year, authorities found blood and signs of forced entry at her home. Security footage also discovered an armed and masked person tampering with her doorbell camera the morning she went missing.

Savannah, 54, took a leave of absence from hosting the Today show following Nancy's vanishing. She returned to the NBC stage on April 6 following the Easter holiday.

The news broadcaster opened up to good friend Hoda Kotb in a candid interview back in March about the pain she still feels over her mom.

"I wake up every night in the middle of the night, and in the darkness, I imagine her terror. And it is unthinkable, but those thoughts demand to be thought," Savannah sobbed. "Someone needs to do the right thing. We are in agony. We are in agony. It is unbearable."