Nancy Guthrie, 84, is missing after being reportedly abducted from her Tucson, Arizona, home on February 1.

Law enforcement sources say the FBI has been coordinating with Mexican authorities, including its Hermosillo, Sonora suboffice, though there is no evidence she crossed the border.

Doorbell camera footage from Guthrie’s home shows a suspected kidnapper, and investigators are still recovering additional video from other cameras on the property.

Rewards totaling over $200,000 have been offered for information leading to the arrest of those responsible, including contributions from the 88-CRIME tipline and the FBI, CBS News has reported.

Pima County Sheriff Chris Nanos emphasized that Guthrie’s family, including Savannah Guthrie and her siblings, have been fully cooperative and are not considered suspects.