Colorado killer, Chris Watts, has revealed more details about the murder of his pregnant wife and two daughters. Dr. Phil spoke to Watts lawyers on Tuesday after Watts provide a five-hour prison interview to investigators.

The murder of Watt’s wife and children may have been the result of an argument, according to his legal team as a representative told Dr. Phil, that he “essentially confessed to having an affair that he wanted a divorce, that it was pretty much over between them, and she had said something to the effect of ‘Well, you’re not gonna see the kids again.’”

“As a consequence of that conversation, he strangled her to death,” the legal representative said.

As Watts was covering the body of Shan’ann with a sheet, his four-year-old daughter, Bella, walked into the room. Bella knew her mother was not alright at the time, and Watts reportedly told the little girl, “’Mommy is sick, and we need to take her to the hospital to make her better.’"

“From our understanding, Bella did not witness the actual killing of her mother, Shan’ann,” the legal representative told Dr. Phil. “It was not until Chris was in the process of trying to dispose of Shan’ann’s body, essentially wrapping her up in this sheet.”

Watts then dumped Shan’ann’s body in his pickup truck and drove it to a shallow grave. At this time, a neighbor caught the act on camera.

After murdering Shan’ann, Watts then turned on his children. Watts “takes Cece’s favorite blanket and smothers her,” the legal representative told Dr. Phil. Both Bella and three-year-old Cece were found in an oil tank at Watt’s employer.

According to Dr. Phil, Watts said in his interview that “Shan’ann was a good and loving mother” that had nothing to do with the death of her children.

Watts is serving three life sentences for the deaths of his family in a Wisconsin prison.