Texas mom sentenced to life in prison for killing, beheading 5-year-old daughter

A Texas mother who was convicted of killing and decapitating her 5-year-old daughter has been sentenced to life in prison.

According to KEYE-TV, Krystle Concepcion Villanueva, 27, of Kyle, was found guilty Thursday of capital murder in the 2017 slaying of Giovanna Hernandez. She also was convicted of aggravated assault and sentenced to an additional 20 years for stabbing her father-in-law during the incident, the station reported. Villanueva, who had pleaded not guilty by reason of insanity, will not be eligible for parole.

On Jan. 5, 2017, authorities responded to Villanueva's home after her father-in-law reported that he had been stabbed from behind, KEYE reported. Villanueva, who was inside the house with the child, later called 911 and admitted to killing the girl after the child had "asked for cereal," KOSA-TV reported.

SWAT officers discovered the girl, who had been decapitated and stabbed, dead inside the home, according to KOSA. They also found Villanueva, who was naked, officials said.

Villanueva initially told investigators that her father-in-law and Giovanna "had been replaced by clones and had to be killed to bring back her real family members," KOSA reported. Authorities later learned that Villanueva had been under the influence of marijuana and alcohol, the station reported.