Patrick Frazee, the man accused of murdering missing Colorado mom, Kelsey Berreth, entered a plea of not guilty at his Friday morning arraignment hearing. Frazee is being charged with two counts of first-degree murder, three counts of solicitation to commit first-degree murder, one count of tampering with a deceased human body, and two counts of a crime of violence.

Frazee, 32, allegedly beat Berreth with a baseball bat, burned her body, and disposed of the remains. He was arrested in December in connection with Berreth’s murder along with Idaho nurse Krystal Lee Kenney, who was charged with evidence tampering of Berreth’s cell phone.

Kenney disclosed to investigators that Frazee was allegedly responsible for Berreth’s murder in a plea deal for her testimony. Kenney claimed that Frazee persuaded her to clean up the crime scene and dispose of Berreth’s cell phone in Idaho.

Investigators believed that Berreth’s remains were dumped in a Colorado landfill or river. An extensive search of Midway Landfill provided no evidence in the case.

Berreth was reported missing by her mother on Dec. 2. She was last seen on surveillance footage at a Woodland Park Safeway store with her daughter Kaylee on Thanksgiving Day. Frazee is thought to be the last person to see her alive.

In this representational photo, a driver who failed a field sobriety test at a DUI traffic checkpoint stands in handcuffs waiting to be processed in Miami, Florida, June 4, 2007. Joe Raedle/Getty Images