Investigators are poring over clues, seeking any overlooked information as the search for Nancy Guthrie continues.

The neighborhood has seen officers going door-to-door again, even as DNA is still being processed. Savannah Guthrie has returned to New York to her husband and children, even making an appearance at her workplace.

A joint task force has been established in Tucson. No one is giving up on finding Nancy Guthrie. 

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Pima County Sheriff’s Department and FBI investigators returned to Nancy Guthrie's neighborhood asking some of those living around her whether they noticed any internet connection disruptions the night Guthrie disappeared.

Authorities have not said why they were asking, but many suspect an attempt to show possible use of a jammer.  

One home was of particular interest, the closest to Guthrie's property. The couple's home has four Ring cameras, and one camera did experience glitches.  

Joining Nancy Grace today:

• Bob Krygier - Former SWAT Commander at Pima County Sheriff’s Office  
• Brian Fitzgibbons  -  Director of Operations for USPA Nationwide Security; Instagram: @uspa_nationwide_security, former Marine and Iraq war veteran
• James Bass -  Digital Forensic Analyst and Expert Witness  of Evidence Solutions Inc. in Tucson, AZ; LinkedIn: www.linkedin.com/in/bassjwb  
• Dave Mack -  Investigative Reporter, 'Crime Stories'

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Utah children’s grief author Kouri Richins’ handyman lover sobs in court as their romantic texts exposed at her murder trial. The nation closely watching two local election races as a convicted sex-offender and accused murderer run for public office. The Brazos County Sheriff’s Office in Texas released an image of a truck belonging to Nicole “Nikki” Winder, a 53-year-old who has not been seen since February 25. Sydney Sumner reports. 

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Tommaso Cioni is seen for the first time along with his wife and sister-in-law, Savannah Guthrie, alongside the makeshift memorial for Nancy Guthrie.

Cioni, in the many public social postings, has been suspected of being involved with his mother-in-law's disappearance, despite assurances from police that the family has been clear of suspicion.

As the investigation continues, questions of whether or not the suspect returned to the scene of the crime have been raised. Are there clues among the flowers and gifts left in the memorial?

Joining Nancy Grace today

• Heather Barnhart – Digital Forensics Expert with Cellebrite and the SANS Institute (SysAdmin, Audit, Network, and Security) One of the Digital Forensic Investigators in the Bryan Kohberger case, Co-Author of “Practical Mobile Forensics” (now in its 4th edition)
• Brian Trascher – Vice President of the United Cajun Navy — The Cajun Navy is now in Arizona offering to help search for Nancy Guthrie
• Dr. Bethany Marshall –  Psychoanalyst, Author: “Deal Breaker,” and featured in hit show “Paris in Love” on Peacock; Instagram & TikTok: drbethanymarshall, X: @DrBethanyLive
• Brian Fitzgibbons – Director of Operations for USPA Nationwide Security (leads a team of investigators specializing in locating missing persons), Marine and Iraq War Veteran; Instagram: @uspa_nationwide_security
• Dave Mack – 'Crime Stories' Investigative Reporter

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A minor fender bender turns deadly for a dad of 3 when he tries to exchange insurance information with an ex-con. 

A mother who smothered her 3 young girls in a jealous rage, could soon be walking free - after being cleared for parole. Plus, a thief is busted for a spicy scam. Jennifer Gould reports. 

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Despite a reward of up to $1,000,000 and thousands of leads coming in, the best investigators can say is that the investigation is "definitely closer."

The search includes combing for a key piece of missing evidence: the suspect's cell phone. Sheriff Chris Nanos says cell towers in the area have been pinging, among other leads, in an effort to connect a digital trail.

He acknowledges that there is a lot more data, leads, and tips to be looked at.

• TIPLINE: FBI TIPLINE PH: 1-800-CALL-FBI (1-800-225-5324)
• ANONYMOUS TIPS: PH: (520) 882-7463

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The Tucson, Arizona man briefly detained in the kidnapping of Nancy Guthrie is now speaking publicly—insisting he had nothing to do with the disappearance and urging the public to stop what he calls online mob speculation.

The father of an accused school shooter is found guilty of murder for enabling the crime.

A self-driving vehicle blocks first responders called to this weekend’s mass shooting in downtown Austin, as they rushed to the scene where three people died and more than a dozen were injured.

Two young children in York County, Pennsylvania are kept in restraints for most of the day, locked inside a crib turned cage and a car seat, in what prosecutors now call child torture.

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The Guthrie siblings' grief is visible as they visit the makeshift memorial set up outside Nancy Guthrie's home. The trio left their own note to their mother.

It reads, "Momma, we miss you so much! Our hearts are broken. We are standing on ash, on scored earth! But Mom, though we are surrounded by so much darkness and uncertainty, our love burns bright. We love you, Mommy. We miss you so much. Our best friend!!"

Meanwhile, the search continues as Pima County Sheriff Chris Nanos says investigators are "definitely closer," but are they? 

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Recently released bodycam footage from Ohio authorities provides insight into the moments following the tragic shooting of Ashley Flynn, the spouse of former American Idol contestant Caleb Flynn.

Jurors in the case against Misty Roberts, the former mayor of DeRidder, Louisiana, heard testimony this week indicating that a DoorDash driver dropped off Plan B emergency contraception at her residence shortly after she allegedly sexually assaulted a teenage boy. Nicole Partin reporting.

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Nancy Guthrie has now been missing for a month.

Police have expanded their search to include new video surveillance of cars in the vicinity of Guthrie's home the night she disappeared. 

Some investigators now say this is the best new search tool. Internet sleuths have also suggested a possible star emblem on the suspect's jacket, seen in door cam footage, and a possible tattoo.

More than 1,500 tips have been called in since Savannah Guthrie announced a reward of up to $ 1 million.

• TIPLINE: FBI TIPLINE PH: 1-800-CALL-FBI (1-800-225-5324)
• ANONYMOUS TIPS: PH: (520) 882-7463

See omnystudio.com/listener for privacy information.