The husband of kidnapping victim Sherri Papini described the remarkable moment he got to tell their son that his mother was safe and coming home in an interview with 20/20.

Keith Papini fought back tears as he recalled grabbing his four-year-old son Tyler after he got the news that Sherri was safe and sitting the boy down, saying: 'You know what buddy? I found mom.'

The young boy responded by giving his father 'the biggest grin' said Keith, who then told the couple's two-year-old daughter Violet.

'I wanted to do it one by one,' explained Keith, who got to deliver the good news on Thanksgiving morning.

It has now been over a week since Sherri was released by her captors, and there are still many questions that remain unanswered in the case.

Sherri is also having difficulty describing the two women who held her captive because in addition to keeping her isolated and shackled in a basement they also covered her head with a hood, making it hard for her to see anything but their eyes.

Sherri was also starved, beaten, branded and brutalized by the two Hispanic women, who remain at large and are armed according to police.

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Sherri Papini's husband spoke about the moment he told their 4-year-old son Tyler that his mother had been found safe in a new interview (Pepini family above in 2014)

Happy kids: Keith Papini (above with ABC's Matt Gutman)said that after telling Tyler he 'found mom' the young boy got the biggest grin, and her then told 2-year-old daughter Violet the news

Keith also detailed the 'very mixed emotions' he felt when he heard his wife's voice for the first time during his interview.

He said that he received a call from the police officer who arrived on the scene after his wife was released by her captors on a California freeway, and in the background he could hear his wife screaming his name.

'It's very emotional. And, "I love you, I love you, I love you, Oh my God, you're here. You're back. Where are you?"' said Keith.

The phone was then taken away from Sherri said Keith while officer attempted to keep her calm as he tried to understand what had happened to the 34-year-old mother of two.

'I'm panicked but I'm happy because at this point this is the first time I've heard her voice,' said Keith.

'I know she's alive.'

The Shasta County Sheriff's Department is still looking for clues to determine why Sherri was targeted and the motive of her kidnappers in their ongoing investigation.

Bill Garcia, a private detective who has been looking into the case, said in an interview with Today on Thursday that he believes that Sherri may have been sex trafficking victim.

TIMELINE OF SHERRI PAPINI'S KIDNAPPING November 2: Sherri Papini fails to pick up her two children from daycare and is reported missing by her husband Keith November 10: Keith Papini is ruled out as a suspect after passing a lie detector test November 18: The FBI joins the search for Sherri as an anonymous donor offers $50,000 for her return November 22: Christine Everson spots a woman she believes to be Sherri Papini at a rest stop in Redding, just miles away from the missing woman's home. The woman refuses to engage Everson in conversation after she approaches the dark SUV she is sitting in, the same tupe of car police are now looking for in the case. Everson leaves but reports her sighting to police. November 23: Cameron Gamble, a local 'negotiator', appears in a video on behalf of the anonymous donor to inform Sherri's captors the ransom was now 'off the table'. Instead it was turned into a $100,000 reward for information November 24: Sherri flags down a passing motorist at the intersection of I-5 and County Road 17 and is taken to hospital Advertisement

'I suspect based on the types of injuries Sherri incurred, the beatings, the broken nose, the cut hair, especially the chains and the branding, indicate that most likely it was one of these sex trafficking groups,' said Garcia.

When asked about sex trafficking being a possible motive Shasta County Sheriff Tom Bosenko would only say: 'We don't know if this was related to any cartel or sex trafficking.'

Sheriff Bosenko told DailyMail.com on Wednesday: 'Right now we have no known reason why she was abducted, we do not know if she was specifically targeted or if this was a random abduction.

'It's still an active and ongoing investigation and we're still looking for the reasons or the motive for this abduction.

'Abductions are generally rare, especially in this area, but I mean in general an adult abduction is an unusual occurrence.'

He also spoke about the fact that Sherri's captors branded her with some sort of message, which neither he nor her husband Keith with share details about.

'I would think that that was some sort of either an exertion of power and control and or maybe some type of message that the brand contained,' said Sheriff Bosenko earlier this week.

'It is not a symbol, but it was a message.'

Keith previously revealed that his wife's captors kept her in restraints at all times, whether she was inside the house or out with them in a vehicle.

'She had a metal chain around her waist. She had a bag over her head,' said Keith.

'She was chained anytime she was in a vehicle. They opened the door... they cut something, freed her restraints that were holding her in the vehicle and they pushed her out.'

They even kept her chained up after releasing her on the side of the road at around 4am on the morning of Thanksgiving.

Police said the women may be travelling in a dark SUV and that the younger of the two has long curly hair and a thick accent. She also has pierced ears and thin eyebrows.

The older woman has thick eyebrows and straight black hair with streaks of gray.

Search: Police are looking for the two Hispanic women who released Sherri on Thanksgiving, saying they could be driving a dark-colored SUV (map of Sherri's disappearance and discovery)

Horror house: Sherri (above on a family vacation) was kept isolated and shackled in a basement where she was beaten, starved and branded during her 22 days in captivity

Keith said his wife told him that she screamed until she was 'coughing up blood' trying to get a motorist to stop before realizing that her chains might be scaring them away because it looked like she had broken out of prison.

After she realized this Sherri hid the chains and was able to flag down a driver according to Keith.

He made his first statement to the media about his wife's disappearance earlier this week after spending the weekend alone with his family.

In addition to describing her injuries, he also lashed out at those who have implied that his wife is lying about the kidnapping.

'Rumors, assumptions, lies, and hate have been both exhausting and disgusting. Those people should be ashamed of their malicious, sub human behavior,' said Keith in the statement, which was released just four days after his wife was found safe.

'We are not going to allow those people to take away our spirit, love, or rejoice in our girl found alive and home where she belongs.'

He later stated: 'I do not see a purpose in addressing each preposterous lie. Instead, may I give you a glimpse of the mixture of horror and elation that was my experience of reuniting with the love of my life and mother of our children.'

Gone girl: Sherri (above in a family photo from earlier this year) was reported missing by Keith after going out for a jog near their home in Redding on November 2

Harrowing ordeal: Keith said his wife told him that she screamed until she was 'coughing up blood' trying to get a motorist to stop after being released by her captors

Sherri was reported missing by Keith after going out for a jog near their home in Redding on November 2 and failing to return.

Keith said he first grew concerned when he learned that his wife had failed to pick up their two children from daycare.

He traced her discarded iPhone to the side of the road about a mile from their home where he found it tossed on the ground with her running 'ear buds'.

A missing persons appeal was launched soon after, with posters littering the local town of Mountain Gate and scores of social media pleas for Sherri's return.

Within days Sherri's disappearance had become a national news story.

Keith was later named as a potential person of interest in the case but ruled out when he passed a lie detector test.

In an interview with DailyMaill.com on Monday, California resident Christine Everson revealed that she spotted a woman who looked remarkably similar to Sherri just two days before she was found last week.

Everson said that she was at a rest stop on the outskirts of Redding, just miles away from Sherri's home, when she noticed a woman looking 'scared' while sitting in the passenger side of a vehicle.

She attempted to speak with the woman, who she described as 'subdued,' but could not get her to engage in a conversation.

At one point she even asked the woman point blank if she was Sherri, but did not get a response.

Sighting: On Monday, Christine Everson told DailyMail.com that she believes she spotted Sherri last Tuesday at a rest stop in Redding (above), just miles away from her home

Scene: Sherri was found chained on the side of the road near Sacramento on Thanksgiving morning (above), 140 miles away from her home

Everson said she later called police to report the possible sighting, and it is unclear if they followed up on her tip.

The woman that Everson saw was in a dark SUV, just like the one police have stated they are searching for, but was with two men and not two women.

Everson also noted that while her hair was unwashed, it had not been chopped off, and there were no visible marks or bruises on her face or body.

She also revealed that she believes her senses were heightened in the moment due to the fact that she was also abducted as a young girl.

Shasta County Sheriff Tom Bosenko said that detectives are not any closer to establishing a reason or motive behind the kidnapping

Another red flag she revealed was the fact that the men had both left the vehicle while the woman remained inside.

Everson described the driver of the blue truck as around 5ft 6’/5ft 7’ tall, wearing a beanie, jeans, dark shoes and a dark jacket.

She said he was Latino in appearance, but lighter skinned.

The second man was tall and was wearing Jeans and tennis shoes. He was Caucasian and had reddish/brown hair.

Sherri was found roughly 36 hours later, 150 miles south of that rest stop in the town of Woodland.

From there she was transported back to Redding to receive medical treatment.

Keith shared the shock he felt when he finally saw Sherri later that day in his statement on Monday, and the extent of her injuries.

'My first sight was my wife in a hospital bed, her face covered in bruises ranging from yellow to black because of the repeated beatings, the bridge of her nose broken,' said Keith.

'Her now emaciated body of 87 pounds was covered in multi colored bruises, severe burns, red rashes, and chain markings. Her signature long, blonde hair had been chopped off.'

He then added: 'She has been branded and I could feel the rise of her scabs under my fingers.'

Keith will be sharing more details about his wife's kidnapping and the ongoing investigation into why she was targeted on 20/20, airing Friday night at 10pm on ABC.