The judge sentenced Chris Watts, 33, to serve the rest of his life in the Colorado Department of Corrections with no possibility of parole. The sentencing comes two weeks after Watts pleaded guilty to avoid the death penalty. Prosecutors said Shanann Watts' family consented to the plea deal.
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Watts also pleaded guilty to unlawful termination of a pregnancy and tampering with a deceased human body.
Watts grew up in Fayetteville, North Carolina. His wife Shanann grew up in Southern Pines. Shanann was reported missing Aug. 13 after she missed a doctor's appointment.
WATCH: Shanann Watts' mother speaks at Chris Watts' sentencing
Shanann Watts' mother speaks at sentencing
Her husband initially appeared on television pleading for help finding his wife and daughters. Later, he admitted he murdered them.
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Police have said Watts killed his wife and daughters, 4-year-old Bella and 3-year-old Celeste, inside their suburban Denver home. The children were found inside an oil tank. Watts was buried nearby.
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Despite the guilty plea, Watts' parents said they believe there is more to the story.
"It boils down to: I just want the truth of what really happened," said Ronnie Watts, Chris' father. "If he did it all, I can live with it. If he didn't, I want him to fight for it."
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WATCH: Chris Watts' parents speak at sentencing
Chris Watts' mother and father speak at sentencing
Shanann's family pushed back saying her memory and reputation should be protected.
"Shanann was a wonderful soul. Everyone who knew Shanann knows this to be true. Even Chris Watts knows this to be true. Yet Chris Watts still chose to murder Shanann, Bella, Celeste, and Nico. Chris Watts still chose to dump the bodies of his own family in oil tanks. And Chris Watts still chose to lie about it until he could lie no more. He pled guilty to murdering his family because he is guilty."
Watts' eligibility for the death penalty was removed as an agreement for him pleading guilty in the case.
The Associated Press contributed to this report.