Watts, 33, initially told investigators that he killed his wife Shanann Watts, 34, but only after he saw her choke Bella, 4, and Celeste, 3, to death.
He claimed his wife flew into a rage and killed the children, upsetting him and leading to him killing her.
Watts told investigators in the new interview that he seized on the idea of his wife hurting the children when a detective floated the idea. Shortly after, Watts claimed he killed his wife because she killed the girls.
“I never even thought about it until you guys mentioned it,” he said. “I just went with it.”
The motivation stemmed in part from a desire for his family to believe him, he said.
“I knew they would probably believe it… because my mom and my sister just never really liked Shanann,” he said.
Investigators said some believe that Kessinger was involved in the murders but Watts denied her involvement.
Watts’s family has not reacted to the new information but the family of Shanann Watts said that the new information was startling.
“It’s worse than we ever thought,” Frankie Rzucek, her father, told Dr. Phil. “We thought we’d heard the worst already, we had no idea it was worse than this.”
“I cry all the time. There’s many times that I feel like giving up. If it wasn’t for God, I wouldn’t be here,” Sandra Rzucek, her mother, added.
The reaction was released in a preview clip for a full interview slated to air on Monday.
Choked Daughter
Prosecutors previously said that Bella fought for her life as Chris Watts strangled her to death.“Imagine the horror in Bella’s mind as her father took her last breaths away,” Rourke added.
The county coroner found blunt force trauma on the girl’s jaw, and lacerations, and contusions in her mouth. The autopsy also found teeth impressions and superficial bite marks on the surface of her tongue.
The coroner said Celeste also died from asphyxiation due to smothering.
Shanann had bruises on the neck that can be explained by her husband’s strangulation, Rourke said.
“We know that our experts tell us that it takes two to four minutes to strangle someone to death manually with their own hands,” he said.
“The horror that she felt as the man that she loved wrapped his hands around her throat, and choked the life out of her must have been unimaginable.”