Authorities complete search on property of missing Colorado mom Kelsey Berreth's fiance

Authorities completed digging on the Colorado property owned by Kelsey Berreth's fiance Sunday, the second day police searched for evidence of the missing mom at the home.

The Woodland Park Police Department did not say whether anything was found on Patrick Frazee's property but confirmed that Berreth, who was last seen on Thanksgiving Day, has still not been located.

On Saturday, police announced that an anonymous donor is offering $25,000 for information leading to the safe return of the new mom. She was last seen on surveillance video at a Safeway grocery store on Nov. 22 with her 1-year-old daughter. Frazee, told police he later saw Berreth to pick up their daughter.

Berreth, 29, was reported missing on Dec. 2 by her mother, Cheryl.

Woodland Park police served Frazee with a search warrant on Friday to begin investigating his 35-acre property in the rural town of Florissant, Colorado, about 35 miles northwest of Colorado Springs.

Frazee and Berreth do not live together.

While Frazee has not spoken to the media, he says he continues to cooperate with investigators. He has not been named a suspect or person of interest.

"Patrick Frazee continues to cooperate with law enforcement in the missing person investigation of Kelsey Berreth," Frazee's attorney, Jeremy Loew, said in a statement Friday. "We understand that a search warrant was executed on Mr. Frazee’s property. Mr. Frazee was never asked to voluntarily participate in this search. 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."

A neighbor of Frazee sent ABC News photos of authorities bringing in an excavator to begin digging on the property at about 3 p.m. on Saturday. Authorities completed their search of the property late Saturday, according to Colorado Springs ABC affiliate KRDO.

It is not clear whether they found anything at the home.

The search warrant is sealed and authorities would not disclose what led them to investigate Frazee's home and land in the first place.

Woodland Park Police Chief Miles De Young said Friday that they still want to sit down with Frazee for an interview, but had yet to do so.

ABC News' Clayton Sandell contributed to this report.