Just days ago, police admitted they had turned up few clues in the case of Kelsey Berreth, the mother from Colorado who seemingly vanished on Thanksgiving.
Now, investigators say they are searching a ranch owned by Berreth's fiance, Patrick Frazee, for evidence that could explain what happened to her.
Berreth, 29, is a flight instructor and new mother from Woodland Park, Colorado. She was last seen in public visiting a Safeway grocery store near her home, where cameras recorded what is now the last known footage of Berreth on November 22.
Kelsey Berreth surveillance video
Woodland Park police on Tuesday released surveillance video of 29-year-old Kelsey Berreth that was taken at the Safeway grocery store in Woodland Park on Nov. 22"�the day she was last seen. ABC News also tried unsuccessfully Tuesday to speak with her fianc�. http://bit.ly/2QqXJ3ZPosted by Denver7 on Tuesday, December 11, 2018
Frazee told police that his fiance visited him later that day, and dropped off their one-year-old daughter, but said they did not spend Thanksgiving together.
He also told them he received text messages from Berreth's phone number three days later. Her employer received messages from Berreth's number that day, saying she would not be coming in to work that week.
The same day, Berreth's phone appeared to "ping" or bounce its signal off a cell tower in Gooding, Idaho, about 800 miles from her home.
Berreth's mother, Cheryl, was the one to finally report Berreth missing on December 2nd, 10 days after anyone had last seen her in person.
She told Today that when she spoke with her daughter on Thanksgiving, Berreth never mentioned any travel plans. In fact, they spoke about their plans for Christmas.
When asked at a press conference why Frazee did not report his fiance was missing, Woodland Park's Police Chief Miles DeYoung said, "That's a question you'll have to ask Patrick."
DeYoung made it clear at the time that Frazee had been cooperating with investigators.
After a search of Berreth's home turned up more unusual details - like how both her cars were parked on the property, and that a fresh batch of cinnamon rolls had been left untouched since Thanksgiving - police asked the public for any information they could provide.
On Friday, police began to carry out a search warrant on a 35-acre ranch belonging to Frazee in Florissant, Colorado, and announced it could take as long as three full days to comb the property for clues.
Frazee's attorney, Jeremy Loew, told reporters that his client was cooperating with investigators, but had not been asked to join the search on his property.
"We encourage law enforcement to take whatever steps it deems necessary to find Kelsey Berreth and to be able to exclude Patrick Frazee as a possible suspect in this missing person investigation," Loew said.
Frazee has already been interviewed by police, handed over his cell phone, allowed police to take his DNA, and handed photos over to them, according to Loew.
Earlier this week, Cheryl Berreth insisted her daughter's disappearance was "completely out of character."
"Kelsey loves her God. She loves her family and friends. She loves her job," she said.
"Someone knows where she's at."
Police continue to treat Berreth's disappearance as a missing person's case, and say they plan to announce a reward for information that could bring her home soon.
Kelsey Marie Berreth is described as a white female with brown hair, with a height of about 5'3"�, weighing 110 pounds. She was last seen wearing a white shirt, gray sweater, blue pants, and white shoes, carrying a brown purse.
Anyone with information can call the Woodland Park Police Department at 719-687-9262, or the Colorado Bureau of Investigation at 719-647-5999.
[H/T: NBC News]