More than five weeks after the suspected abduction of Nancy Guthrie — the 84-year-old mother of “Today” co-host Savannah Guthrie — Arizona authorities say cadaver dogs used earlier in the investigation are not currently being deployed as the search continues.

The elder Guthrie is believed to have been kidnapped from her home in the Catalina Foothills in northern Tucson around 2:30 a.m. on Feb. 1.

While no suspects have been publicly identified, and she has not been found, cadaver dogs had been deployed earlier in the case, according to Pima County Sheriff Chris Nanos. They have not been visible in weeks.

“They are available if needed in the future,” he told Fox News Digital.

There are a number of reasons not to be using cadaver dogs at this stage in the investigation, according to Betsy Brantner Smith, a retired police sergeant and spokeswoman for the National Police Association.

One would be if there’s credible information that Guthrie is still alive.

“Anything is possible,” Nanos told Fox News Digital last week, adding that he would not discuss specific leads or evidence in the case.

Brantner Smith, who is not involved in the case, said departments may hold back K-9 resources for several reasons. Those could be that authorities don’t have a good idea of where to search, they think she might be concealed in a place where dogs would have a hard time detecting her, or they believe she’s been taken to Mexico, according to Brantner Smith.

“I do believe that the sheriff’s department has much more information that they are not releasing to the public,” she told Fox News Digital. “And I’m not sure at this point why that would be, unless they have a solid suspect and don’t want to tip them off.

“Most departments, including the Pima County Sheriff’s, don’t have their own cadaver dogs and borrow them from state and federal authorities or neighboring jurisdictions.

In Guthrie’s case, the sheriff’s department sought K-9 assistance from the local Border Patrol office earlier in the investigation.