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 By Tim Stelloh 
 
 Authorities searching the Colorado property of a missing woman’s fiancé said Sunday that investigators completed their work without finding Kelsey Berreth. 
 
 Berreth, 29, vanished on Thanksgiving in what police in Woodland Park, northwest of Colorado Springs, have described as a suspicious disappearance. 
 
 She was last seen walking into a Safeway grocery store in Woodland Park. Three days later, her cell phone pinged to a location in Idaho, 800 miles away. 
 
 In a statement Sunday, the Woodland Park Police Department said roughly 75 people were involved in the Saturday search of Patrick Frazee’s property in nearby Florissant. 
 
 A backhoe was also used “to be as thorough as possible,” it said. 
 
 “We still have not found Kelsey,” the department said. “Investigators continue to conduct interviews and this case remains our number one priority.” 
 
 Authorities have not identified Frazee as a person of interest or a suspect in Berreth's disappearance, but Woodland Park Police Chief Miles De Young said last week that Frazee was the last person to see her “face to face.” 
 
 “We have yet to have him sit down with...investigators and that’s what we’re asking for,” De Young told reporters, adding that Frazee was “communicating with us through his attorney and that’s about all I can say about that.” 
 
 But Frazee’s lawyer, Jeremy Loew, said his client has cooperated with police since Berreth, a flight instructor with Doss Aviation, went missing, turning over his cell phone and photos and providing a DNA sample. 
 
 "Mr. Frazee was never asked to voluntarily participate in this search," Loew said in a statement Friday. "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." 
 
 The Sunday statement from police said only that authorities had completed their search of Frazee’s property ||||| Close Get email notifications on Liz Forster daily! 
 
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 Email notifications are only sent once a day, and only if there are new matching items. ||||| FILE - In this undated file photo, Woodland Park Police Chief Miles De Young answers questions about the disappearance of resident Kelsey Berreth, while her mother, Cheryl Berreth, stands in the background... (Associated Press) 
 
 FILE - In this undated file photo, Woodland Park Police Chief Miles De Young answers questions about the disappearance of resident Kelsey Berreth, while her mother, Cheryl Berreth, stands in the background during a news conference at City Hall in Woodland Park, Colo. Police are offering a $25,000 reward... (Associated Press) 
 
 WOODLAND PARK, Colo. (AP) — Police are offering a $25,000 reward for information leading to the whereabouts of a Colorado woman who was last seen on Thanksgiving Day. 
 
 An anonymous donor provided the reward money to the Woodland Park Police Department, which is leading the search for 29-year-old Kelsey Berreth. 
 
 Berreth was last seen on surveillance video entering a Woodland Park grocery store on Nov. 22. 
 
 Her fiance, Patrick Frazee, told investigators the couple met that day so he could pick up their 1-year-old daughter. They did not live together. 
 
 Police Chief Miles J. De Young said in a statement Sunday that a search of Frazee's 35-acre property was completed. The property was returned to Frazee. 
 
 Police have not called Frazee a person of interest. 
 
 Woodland Park is 50 miles (80 kilometers) south of Denver.
– A Colorado woman is still missing after an intensive search of her fiance's property that involved 75 officers from different law enforcement agencies, authorities say. Kelsey Berreth, a 29-year-old flight instructor from Woodland Park, has not been seen since Thanksgiving and authorities have described her disappearance as suspicious, NBC News reports. Authorities say the scores of officials spent two days searching the 35-acre property of fiance Patrick Frazee, who is the father of Berreth's 1-year-old daughter. Also, police say an anonymous donor has offered a $25,000 reward for information leading to Berreth's whereabouts, per the AP. In regard to the search, the Woodland Park Police Department says a backhoe and dogs were used "to be as thorough as possible." Frazee has declined to meet face-to-face with investigators, though his attorney, Jeremy Loew, says he is cooperating with investigators and has provided his cellphone and DNA samples, the Colorado Springs Gazette reports. Berreth was reported missing by her mother on Dec. 2. Three days after she was last seen at a Safeway on Nov. 22, her cellphone pinged to around 800 miles away in Idaho. A text message sent to her employer from her phone said she wouldn't be at work the following week. Authorities haven't disclosed the contents of another message sent to Frazee.