Overview
- The FBI said the DNA under review, including a hair from Guthrie’s home, is not new evidence and was requested for testing two months ago.
- Officials describe the material as mixed or a rootless hair, which is hard to profile and may take weeks to many months to process.
- The sample was first handled by a private Florida lab before being transferred to the FBI, a sequence that drew criticism from a retired agent who argued it slowed the case.
- Pima County Sheriff Chris Nanos said no one has been newly detained and investigators have not identified a suspect.
- Investigators continue to seek tips using doorbell footage of a masked visitor to the porch, and rewards of up to $1 million from the family and $100,000 from the FBI remain available.