The revelation comes after evidence has already been tested through a Florida lab that the Pima County Sheriff's Office uses.

Today co-anchor Savannah Guthrie ‘s mom, Nancy Guthrie, is still missing 10 weeks after she was abducted from Tucson, Ariz.—and a retired FBI agent just issued "caution" over a hair DNA sample.

"PCSD has worked with the FBI since the beginning of the Guthrie investigation," the statement, posted on X, reads.