New details have emerged in the case of the Colorado missing mom, Kelsey Berreth. According to prosecutors, there are two possible theories as to how Berreth was possibly murdered.

One theory involves a robbery, the Daily Mail reported. Based on the charges against Berreth’s fiancé, Patrick Frazee, he may have also solicited someone to kill her on three different occasions, the news outlet said.

Frazee was charged on five counts of murder relating to her death, including two counts of first-degree murder and three counts of solicitation to commit first-degree murder. Frazee did not speak during the court proceedings, according to the Daily Mail. He is currently being held at the Teller County Jail without bond.

Prosecutors have said they are keeping much of the details about the case under wraps to protect the ongoing investigation. The arrest warrant was sealed as prosecutors have said it could “seriously jeopardize the physical safety of potential witnesses in the investigation,” the Daily Mail reported.

Frazee and his lawyers will see the arrest warrant for the first time Monday afternoon, where they may decide what type of plea to enter in court, according to the news outlet. Court records indicate that Frazee will fight the charge of first-degree murder as he has requested that all evidence be given to his lawyers and filed a motion for limit pretrial publicity.

Frazee's mother Sheila, who was detained by authorities at the time of her son’s arrest but was not placed under arrest, is fighting for custody of the couple’s daughter, Kaylee. Currently, Kaylee is in the temporary custody of Berreth’s parents.

Berreth’s body and remains have yet to be found. Berreth was last seen on Thanksgiving Day at a local grocery store. Frazee is suspected to be the last person to see her alive.