It’s been over a month and a half since Savannah Guthrie’s mom, Nancy, was kidnapped, and there are still no solid leads on what happened. Or at least, none that have been announced publicly. Police have released surveillance photos and video, and have recovered DNA, but no suspect has yet been publicly identified, and no motive has been revealed.

NewsNation’s senior investigative reporter Brian Entin recently said on the latest episode of Brian Entin Investigates, that the FBI is now “going back to neighbors’ houses and asking more questions.”

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“Some of the things that they’re talking about is there’s one neighbor that moved out before Nancy disappeared, and they are asking more questions about that situation,” he said, per Parade. “Not to say that that has anything to do with what happened. But that is something the FBI agents are asking about.”

He added that one “particularly interesting” detail is that agents are focusing on “several houses that are under construction” in the area.

“They are asking, specifically, for names of contractors and workers who were working in the neighborhood on those houses, on those construction projects,” he said. “And I’m talking about specifics. They want the names of all the contractors and workers who were working on those houses.”

Guthrie went missing sometime in the night of January 31st or the morning of February 1st. And though there have been no concrete leads, one of the neighbors, Aldine Meister, previously told Entin that she had concerns about the vacant property in the neighborhood. “The neighbors on the other side of me moved out. Like I said, I wanted them to check that house,” she said, per The Mirror US.

Meister also said she’d seen a “strange man” walking around the area a couple of weeks before Nancy’s disappearance. She reported this to law enforcement.

All of it comes after retired Pima County SWAT commander Bob Krygier said detectives are making progress in the case. “They are 24 hours closer every single day,” he told Parade, adding that the recent comments from Pima County Sheriff Chris Nanos suggesting investigators are “definitely closer” to identifying a suspect are proof of the progress in the investigation.

“No matter how you look at that statement, the investigators ARE closer every day to ending and solving this case,” he said. “That doesn’t mean it’s going to happen in a week, or a month, or even a year, but they are closer today than they were yesterday.”

Other people familiar with investigations such as this one agree. Retired FBI special agent Greg Rogers told Parade that he is confident there’s significant work being done behind the scenes, particularly when it comes to forensics. “I am confident there is a good amount of familial research underway concerning the DNA samples found in the residence. There won’t be any press releases concerning that…until a potential suspect is identified,” Rogers said.

The reward for information about Nancy Guthrie’s disappearance is up to $1 million.

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