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Michael J. Rourke, Weld County District Attorney, addresses the court at the Weld County Courthouse on November 19, 2018 in Greeley, Colorado. Christopher Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Cindy Watts gets emotional after addressing the court during her son's sentencing at the Weld County Courthouse on November 19, 2018 in Greeley, Colorado. Christopher Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Ronnie and Cindy Watts address the court during their son's sentencing at the Weld County Courthouse on November 19, 2018 in Greeley, Colorado. Christopher Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Christopher Watts sits in court for his sentencing hearing at the Weld County Courthouse on Nov. 19, 2018 in Greeley. Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Michael J. Rourke, Weld County District Attorney, left, stands with Frank Rzucek, the father of Shanann Watts, as he reads a statement during court at the Weld County Courthouse on Nov. 19, 2018 in Greeley. Christopher Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Sandra Onorati Rzucek, the mother of Shanann Watts, sits back down after reading a statement during court at the Weld County Courthouse on November 19, 2018 in Greeley, Colorado. Christopher Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Christopher Watts is brought into court for his sentencing hearing at the Weld County Courthouse on Nov. 19, 2018 in Greeley. Watts was sentenced to life in prison for murdering his pregnant wife, daughters.

Frank Rzucek the father of Shanann Watts, left, and her brother Frankie Rzucek were in court for Christopher Watts arraignment hearing at the Weld County Courthouse on Aug. 21, 2018 in Greeley. Christopher Watts faces nine charges, including several counts of first-degree murder of his wife Shanann and his two young daughters, 4-year-old Bella, and 3-year-old Celeste.

Christopher Watts is in court for his arraignment hearing at the Weld County Courthouse on Aug. 21, 2018 in Greeley.

Christopher Watts is in court for his arraignment hearing at the Weld County Courthouse on Aug. 21, 2018 in Greeley. Watts faces nine charges, including several counts of first-degree murder of his wife and his two young daughters.

Nancy Lee takes a moment after placing flowers at a makeshift memorial for Shanann, Bella and Celeste Watts, outside the family's home on Aug. 17, 2018 in Frederick. Frederick police have arrested Shanann's husband, Christopher Watts, on suspicion of killing the three.

Members of the community gather for a candlelight vigil to honor Shanann, Bella and Celeste Watts outside the family's home on Aug. 17, 2018, in Frederick.

Aubriella Luna, 8, joined others from her community for a candlelight vigil to honor Shanann, Bella and Celeste Watts outside the family's home Aug. 17, 2018, in Frederick.

Frederick Police Department Chief Todd Norris talks to media on Aug. 16, 2018 in Frederick. Frederick police have arrested Shanann's husband Christopher Watts on suspicion of murdering the three.

According to Christopher Watts's arrest affidavit, Shanann Watts' body was found in a shallow grave near this oil work site, seen here on Aug. 21, 2018 near Roggen. Both of her daughter's bodies, 4-year-old Bella and 3-year-old Celeste, were submerged for days in the same oil tanks in rural eastern Colorado, prosecutors said.

Colleen Hendrickson and her grandson Ezra Reed, 3, who lives down the street, place flowers at a makeshift memorial to Shanann, Bella and Celeste Watts, who have been missing since Monday, outside the family home on Aug. 16, 2018 in Frederick. Frederick police have arrested Shanann's husband Christopher Watts on suspicion of murdering the three.

Residents stand in front of a makeshift memorial for Shanann, Bella and Celeste Watts outside the family's home on Aug. 17, 2018 in Frederick. Frederick police have arrested Shanann's husband Christopher Watts on suspicion of killing the three.