Savannah Guthrie visited a memorial outside her mother Nancy Guthrie’s home in the Catalina Foothills on Monday, leaving flowers and a note alongside her family as the community continues to show support.

Nancy Guthrie has been missing for over a month, and authorities have shifted resources to a task force of Pima County homicide detectives and FBI agents, reviewing thousands of tips, video footage, and DNA leads.

A key piece of evidence is a Ring camera video showing a vehicle near East River Road at 2:36 a.m. on Feb. 1, shortly after Nancy’s pacemaker last synced with her iPhone, though investigators caution it may not be directly related.

Retired law enforcement experts have analyzed the footage, identifying the vehicle as a Kia Soul based on its design features, Fox News has reported.

The combined reward for information leading to Nancy Guthrie’s location exceeds $1 million, and anyone with information is urged to contact 1-800-CALL-FBI.