Pima County Sheriff Chris Nanos, who is leading Nancy Guthrie’s kidnapping case, is reportedly blocking the FBI from accessing key evidence, a law enforcement source told Fox News Digital.

“The FBI asked Pima County Sheriff Chris Nanos for physical evidence in the case, including a glove and DNA from the home of 84-year-old Nancy Guthrie, to be processed at the FBI’s national crime laboratory in Quantico, Virginia, but Nanos has insisted instead on using a private lab in Florida,” the unnamed official told the outlet.

Agents discovered a black glove from a roadside near Nancy’s home on Wednesday. The item resembles the pair worn by the armed perpetrator caught tinkering with her home security camera.

No suspects have been named in the 84-year-old’s kidnapping as the investigation stretches into its 12th day.

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.