Savannah Guthrie is appealing to Tucson residents for any information to help locate her mother, Nancy Guthrie, who vanished between Jan. 31 and Feb. 1.

The family urged people to review memories, messages, journals, and surveillance footage, emphasizing that no detail is too small.

Law enforcement has reviewed new security footage from Nancy’s home, but no suspicious activity has been identified, and investigators are using forensic genetic genealogy to analyze DNA from the scene.

The FBI released videos showing a masked man near her front door, and the family has offered a $1 million reward for information, CBS News has reported.

Savannah Guthrie has paused her role on the Today Show to focus on the search while colleagues temporarily cover her duties.