The investigation into the disappearance of Nancy Guthrie has taken another turn after authorities confirmed that human remains were recently discovered near her Arizona neighborhood.

According to the Tucson Police Department, a human bone was found on May 7 near North Craycroft Road and East River Road, roughly seven miles from Guthrie’s home in the Catalina Foothills area. Officials later clarified that the discovery is being treated as a prehistoric anthropological investigation and not a criminal case at this time.

Search for Nancy Guthrie Continues

Nancy, 84, has been missing since Jan. 31. Investigators believe she may have been abducted from her home during the early hours of Feb. 1 by a masked individual captured on surveillance cameras outside the property.

Authorities previously revealed that blood believed to belong to Nancy was found outside the residence. Investigators also recovered mixed DNA evidence, which experts say can be difficult to analyze because it contains genetic material from multiple people.

FBI Using Advanced Testing Methods

Reports from ABC News stated that the FBI has turned to advanced forensic technology in an effort to identify possible suspects connected to the case. The DNA sample was reportedly provided by a private laboratory working alongside local investigators in Arizona.

Pima County Sheriff Chris Nanos previously suggested investigators may already understand the motive behind the alleged kidnapping, although officials have not publicly disclosed further details. He also warned residents not to assume the case was isolated.

Family Increases Reward

As the search continues, Savannah Guthrie and her family have significantly expanded efforts to generate leads. The FBI is offering a $100,000 reward for information leading to Nancy’s recovery or an arrest.

The Guthrie family later raised the total reward to $1 million and donated an additional $500,000 to the National Center for Missing & Exploited Children, drawing nationwide attention to the ongoing investigation.

Cases involving elderly disappearances often become increasingly difficult as time passes, which is why investigators continue urging anyone with information to come forward immediately.