The FBI Phoenix Field Office announced Thursday that the reward for information leading to the location of Nancy Guthrie has been raised from $50,000 to $100,000. The reward also applies to tips leading to the arrest and conviction of anyone involved in her disappearance.

Guthrie, mother of NBC “Today” show co-anchor Savannah Guthrie, was last seen late on Jan. 31 when family members dropped her off at her residence north of Tucson, Arizona. She was reported missing the following day after family and friends could not reach her. Blood matching her DNA was discovered on the front porch, prompting investigators to believe she was taken against her will.

The FBI released updated details about a suspect captured on doorbell camera footage. The individual is described as a male approximately 5 feet 9 inches to 5 feet 10 inches tall with an average build, carrying a black 25-liter Ozark Trail Hiker Pack.

Officials are urging residents in the Tucson area to review doorbell camera and other video footage for any suspicious activity near Guthrie’s residence and submit relevant information to the FBI.