Sunday marked 100 days since Nancy Guthrie, the 84-year-old mother of “Today” show anchor Savannah Guthrie, disappeared from her home in the Catalina Foothills area of Tucson. Despite the milestone, authorities have offered little public information in recent weeks, prompting questions about the state of the investigation.

The Pima County Sheriff’s Office has not held a live press briefing since February 5, but retired FBI agent Scott Augenbaum, who has no direct role in the case, says that silence shouldn’t be mistaken for inactivity. He noted that dedicated case agents remain focused on seeing the investigation through, and that a lack of visible movement doesn’t necessarily mean the case has gone cold.

Augenbaum suggested that a major public update likely won’t come until an arrest or indictment is made, explaining that investigators are wary of tipping off a potential suspect who may still be following news coverage of the case.

According to law enforcement, forensic work — including advanced DNA testing and video analysis — is continuing at laboratories around the country, even though the flow of public updates and leads has slowed to a stop.

The case took on a new layer of tension last week when FBI Director Kash Patel publicly criticized the sheriff’s office, questioning how quickly it looped in the FBI and why evidence was routed to labs in Florida rather than the Bureau’s own facility in Quantico, Virginia.

Pima County Sheriff Chris Nanos pushed back on that characterization. He said in a statement that the FBI had in fact been notified promptly by both his office and the Guthrie family, and maintained that the outside lab handling evidence has worked closely alongside the Quantico lab throughout the investigation.

Augenbaum, who has decades of experience in federal investigations, said Patel’s public criticism reflects just how high-profile and high-pressure the case has become. He added that agents actually working the case on the ground are likely tuning out the interagency friction and staying focused on chasing leads that could bring Guthrie home.

“As more time goes on, more finger pointing goes on,” Augenbaum said, drawing on his own experience with long-running federal cases.