The landfill search for missing Colorado mom, Kelsey Berreth, has ended. The Woodland Park Police Department announced on Wednesday that it has concluded its search for Berreth’s remains, which they believed were dumped in the Midway Landfill in Fountain, Colorado, by her fiancé, Patrick Frazee, who has been charged with her murder.

Officials began their search for Berreth’s remains on Feb. 25, but have been unable to locate any evidence related to the case, the police said. The landfill search extended to 135 feet by 32 feet and 9-inch-deep area, in addition to a larger area that was searched for bones and teeth DNA to provide a positive identification of her remains, KMGH-TV, an ABC affiliate out of Denver, reported.

“We have been working diligently at the Midway Landfill since February 25th, and based on a lack of items such as discarded mail, local newspapers and typical ranch debris that comes out of the transfer station in Divide, Colorado, I do not believe it is prudent to continue,” Police Chief Miles De Young said in a statement.

“This is not the outcome we had hoped for,” De Young added, “but we knew going into this search that there was a chance we would not locate Kelsey or evidence related to her disappearance.”

Frazee allegedly killed Berreth with a baseball bat, burned her body, and dumped it in the landfill. The preliminary hearing for Frazee determined that he may have disposed of Berreth’s remains in the landfill or a river. The Woodland police focused their efforts on the landfill, with a previous inquiry to the area in January, according to KMGH-TV.

The location of the landfill was determined after testimony from Idaho nurse, Krystal Lee Kenney. Kenney alleged that Frazee admitted to murdering Berreth, removing her body from her home with a tote container. He then set her remains on fire on his property using motor oil and gasoline, according to the arrest affidavit.

Kenney has been charged with evidence tampering in the case for Berreth’s cell phone, which she disposed of in Idaho. In exchange for her testimony against Frazee, Kenney was given a plea deal. Evidence tampering is a felony charge in Colorado.

Frazee will be arraigned in a Teller County, Colorado, court on May 24. He is being charged with two counts of murder, three counts of solicitation to commit murder, tampering with a deceased body, and two crime of violence sentence enhancers.