A possible motive may have been discovered in the case of missing Colorado mom, Kelsey Berreth. According to the district attorney’s office, Berreth was reported to the Department of Human Services by her fiancé Patrick Frazee for allegedly harming their daughter, Kaylee.

Frazee, who is being charged with five counts of murder, made the accusations against Berreth, to child welfare workers, which corroborate the testimony that has been given by his alleged mistress Krystal Lee Kenney, The Denver Post reported.

Kenney told investigators during her February testimony that Frazee claimed that Berreth was physically abusive to their daughter. Kenney is the Idaho nurse that is charged with evidence tampering for disposing Berreth’s cell phone.

Kenney pleaded guilty to the felony and recalled that Frazee had wanted to “get rid” of Berreth so she couldn’t injure or kill Kaylee. Agent testimony revealed that Frazee told them that Kaylee had a burn on her hand and a bump on her head, according to the news outlet.

It is not known if Frazee made the report to the Department of Human Services before or after Berreth’s disappearance.

The new documents were obtained from the Department of Human Services by Elizabeth Reeds, deputy Teller Country district attorney and shared with Frazee’s attorneys. Prosecutors in the case are looking to have the documents barred from public release, The Gazette reported.

The search for Berreth continues in a Colorado landfill, where it is thought that Frazee dumped the remains of her body. Frazee allegedly beat Berreth with a baseball bat, burned her body, and disposed of it in the landfill.

Berreth was last seen on Thanksgiving Day on surveillance footage at a Safeway grocery store in Woodland Parks, Colorado. Frazee is thought to be the last person that saw her alive. Berreth was reported missing by her mother on Dec. 2, after a welfare check.

Patrick Frazee Charges Missing Colorado mom Kelsey Berreth's fiance Patrick Frazee faces more charges after a court appearance on Tuesday morning. Police officers of the Brigade des Réseaux Ferrés (BRF - Railway Network Squad) detain a man during a patrol in the metro in Paris on November 2, 2016. Photo: Getty Images/FRANCOIS GUILLOT