Search for Colorado mom last seen on Thanksgiving

Police in Colorado are intensifying their search for a missing mother who was last seen Thanksgiving Day and whose phone reportedly pinged more than 700 miles away in Idaho days after she vanished.

The last confirmed sighting of Kelsey Berreth, 29, was around noon at a Safeway supermarket on Nov. 22 near her home in Woodland Park, nearly 90 miles south of Denver, police said.

Berreth's fiance, Patrick Frazee, told police he last saw Kelsey later that afternoon when he picked up her 1-year-old daughter Kaylee.

Berreth’s mother contacted Woodland Park Police three days later. Investigators conducted a welfare check and found no sign of her at her home.  Berreth’s phone pinged days after her disappearance more than 700 miles away in Gooding, Idaho, East Idaho News reported.

Police are currently classifying it as a missing person case.

The Colorado Bureau of Investigation, the FBI and the Teller County Sheriff's Office are assisting with the investigation.  They say they have conducted multiple canvasses in the community and numerous interviews to work to determine where she may be.