The FBI has released new identifying details about the suspect who kidnapped Nancy Guthrie — and has doubled its initial cash reward for information leading to a break in the case.

“Today, the FBI is increasing its reward up to $100,000 for information leading to the location of Nancy Guthrie and/or the arrest and conviction of anyone involved in her disappearance,” the FBI’s Phoenix office posted on X.

Forensic analysis of doorbell camera footage at the 84-year-old’s Tucson, Ariz., home has revealed several identifying factors about the masked, armed abductor who was seen on her doorstep, officials announced.

Nancy’s alleged kidnapper is a male, approximately 5’9” to 5’10” tall, with an average build, the FBI Phoenix office said. He was also wearing a black, 25-liter “Ozark Trail Hiker Pack” backpack in the doorbell video, authorities added.

“We hope this updated description will help concentrate the public tips we are receiving. Since February 1, 2026, the FBI has collected over 13,000 tips from the public related to this case,” the FBI said in the statement.

The FBI added that its agents review every tip for credibility and determine how the information can be “acted upon by law enforcement.”

“Media outlets should direct tips they receive to the FBI. Additionally, we do not comment on tips and information we receive regarding ongoing investigations,” the bureau added.

Last Thursday, the FBI announced it would award up to $50,000 for information leading to the location of Nancy or the arrest of her alleged abductor.

The updated description of the suspect on Thursday comes as the FBI and the Pima County Sheriff’s Office are looking to question a man seen carrying a backpack in surveillance video obtained by TMZ.

The clip showed a man wearing a black backpack and hoisting another dark blue one above a brick wall around 1:53 a.m., roughly five miles from Nancy’s home on the same night she disappeared.

Authorities have not yet determined whether the man is connected to the kidnapping case.

Nancy was last seen at her Tucson, Ariz., home on Jan. 31, when she was dropped off by her son-in-law, Tommaso Cioni, after she had dinner with him and her daughter, Annie.

“Continue to submit information to the FBI at 1-800-CALL-FBI or http://tips.fbi.gov to help us bring Nancy home,” FBI Phoenix wrote.