Additional charges have been filed against Patrick Frazee, the fiancé of missing Colorado mom Kelsey Berreth. Frazee was initially charged with murder and solicitation to commit murder for the death of Berreth.

A court hearing was held Tuesday morning to determine if Frazee will stand trial. It was there that prosecutors presented evidence against Frazee and issued additional charges of tampering with a deceased body as well as two charges of committing a crime of violence. The new charges against Frazee allows the state to request stricter penalties on conviction, KDVR, a Fox affiliate in Denver reported.

Frazee has yet to enter a plea and has been in jail since his arrest took place in December.

According to a Woodland Park police commander’s testimony, both Berreth’s and Frazee’s cell phones were located in the same place after Nov. 22, according to cell phone records. The Idaho nurse, Krystal Lee, 32, that pleaded guilty to evidence tampering of Berreth’s cell phone has agreed to testify against Frazee.

While Berreth’s body remains unfound, the police have said they have evidence that she was killed at her home on or around Thanksgiving Day. Blood was found in the home by Berreth’s parents, and a cadaver dog hit on a spot located under a vehicle parked at her home, The Gazette reported.

Berreth was last seen on Thanksgiving Day on surveillance footage at a Woodland Park, Colorado, Safeway grocery store with her daughter.

Frazee is suspected to be the last person that saw her alive. Prosecutors claim that Frazee allegedly was looking for someone to kill Berreth between September and November, KDVR reported.

Additional information about the case has not been released, and court records remain sealed.