In November 2018, Colorado husband and father Chris Watts pleaded guilty to killing his pregnant wife, Shan'ann, and his 3- and 4-year-old daughters. He claimed he strangled Shan'ann in a fit of rage after she killed the little girls.

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Recently, the FBI, the Colorado Bureau of Investigation, and the Frederick Police Department interviewed Watts in the prison where he is serving five life sentences for murder, and he revealed shocking new information about the night he killed his family.

During the five-hour long confession, Watts allegedly admitted that he strangled Shan'ann and was wrapping her in a sheet when 4-year-old Bella walked in the room and asked him, “What are you doing with Mommy?”

WATCH: 'Shan'ann Was A Good And Loving Mother, Had Not One Thing To Do With This,' Dr. Phil Says Of Woman Whose Husband Killed Her And Their Daughters

In the video above, Shan'ann’s parents’ lawyers exclusively tell Dr. Phil what Watts allegedly said during the confession about what happened when he arrived at the site where the bodies were found. Hear how Watts reportedly claims Bella and her younger sister, CeCe, were killed – and what Bella said to her father before he ended her life.

On Tuesday’s episode, hear more from the Rzuceks’ attorneys. And on Monday, Dr. Phil has an exclusive interview with Shan'ann’s parents along with her brother. Check here to see where you can watch.

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Crime Of Passion Or Premeditated Murder – New Details About The Chris Watts Case