DENVER — Colorado police say they are searching the property of a missing woman's fiancé.

The search of Patrick Frazee's Florissant property began Friday morning, about three weeks after 29-year-old Kelsey Berreth was last seen.

The same day Berreth went missing, she exchanged her daughter with her fiancé. Family said suitcases, cars and makeup insider her home were untouched.

Since her disappearance, her phone has been pinged in Southern Idaho. She once lived in Grant County and her mother reportedly lives near Sandpoint, Idaho.

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Police have not released any information about the purpose of Friday's search.

Frazee has not been named as a suspect in Berreth's disappearance.

The Woodland Park Police Department is leading the investigation with help from state and federal authorities and scheduled a Friday afternoon update on the case.

Related: 'Someone knows where she is:' Mother missing out of Woodland Park since Thanksgiving

Teller County Sheriff spokesman Commander Greg Couch said Frazee was on the property when investigators arrived. Couch says Frazee was not arrested.

Frazee's attorney said Wednesday that he is cooperating with police and has provided cheek swabs for DNA, and his cellphone.

The Associated Press contributed to this report.