India, Feb. 16 -- Former Arizona Supreme Court Justice Andrew Gould has urged Pima County Sheriff Chris Nanos to resign and let the FBI to oversee the investigation.

During an appearance on Fox News Live, Gould stated that the sheriff has compromised the case. "I think he has made some mistakes in this case that have impeded the investigation," Gould said. This comes amid reports that the FBI and the Pima County Sheriff's Department may be in conflict regarding the Nancy Guthrie kidnapping case.

Citing a law enforcement source, FOX News reported last week that the FBI leadership sought DNA samples from Nancy's residence and additional physical evidence to be forwarded to their crime laboratory located in Quantico, Virginia. However, Nan...