A Texas mother who called 911 to confess she had just killed her five young children - the youngest aged just six months - is likely to spend the rest of her life in jail. In a case which shook the world, Andrea Yates drowned her five children in the bathtub before calling 911 to admit what she had done.

The horrific case unfolded in June 2001 at the Yates' family home in Clear Lake City, a suburb of Houston. At the time, Yates was reportedly suffering from severe postpartum psychosis and schizophrenia, according to the New York Post.

Court testimonies revealed the then-37-year-old waited for her husband, Rusty, a NASA engineer, to leave for work at the Johnson Space Centre before she killed her children - Noah, seven, John, five, Paul, three, Luke, two, and Mary, six months - one by one.

Noah attempted to escape but was caught by Yates, who then laid out the bodies of the children on a bed. She carried out the act methodically, placing the bodies of her younger children on a bed and covering them with a sheet.

After drowning the children, she repeatedly called 911. She reported the deaths of the children, then phoned her husband Rusty and told him to come home from work.

"I just killed my children," she confessed to the officers who arrived at the house. Yates was charged with five counts of capital murder in a crime the prosecution described as "heinous," advocating for the death penalty.

But Yates' legal counsel contended that her severe depression and psychosis, stemming from the recent birth of her daughter Mary, drove her to the horrific act of killing her five children. They argued for mental health treatment over incarceration.

Initially convicted of capital murder in 2002 and handed a life sentence with parole eligibility after 40 years, her conviction was successfully appealed and overturned. She faced a new trial in 2006, where she was acquitted on grounds of insanity. Despite being incarcerated, Yates continued to grapple with delusions, asserting she had thought about killing her children for two years to save them from "eternal damnation".

"My children weren't righteous," she divulged to a prison psychiatrist, as stated in court records. "They stumbled because I was evil. The way I was raising them, they could never be saved. They were doomed to perish in the fires of hell."

Her attorney, George Parnham, insists that Yates has found contentment and is doing well at Kerrville State Hospital, her residence for the last 17 years. As per legal judgments, she might remain there indefinitely.

Reports indicate she still speaks monthly with her ex-husband Rusty, who has re-married since their divorce.

"She's where she wants to be, where she needs to be," Parnham remarked to ABC News in 2021. "And I mean, hypothetically, where would she go? What would she do?".