On the night that 2-year-old Mariah Alvarez died, a Child Protective Services investigator made her way to the Harlingen, Texas, police station to interview the toddler’s siblings.

Mariah’s lifeless body had arrived at a local hospital covered in bruises, which authorities immediately assumed were evidence of abuse. Her mother, 38-year-old Melissa Lucio, who had a history of being investigated by the child welfare agency, tried to explain that Mariah had fallen down a flight of stairs. But the police subjected Lucio to a punishing late-night interrogation lasting more than five hours. After repeatedly denying that she killed her daughter, Lucio finally conceded that she was responsible. In 2008, Lucio was convicted of murder and sentenced to die.

The possibility that Mariah’s death was not murder but the result of a tragic accident was never investigated. Police ignored evidence that included a report compiled by the child welfare investigator, Florence Arreola, who interviewed several of Mariah’s siblings while Lucio was being interrogated in another room. The children corroborated their mother’s account, reiterating that Mariah had fallen down the stairs two days earlier. Lucio had never abused Mariah, they said, and the only injuries they saw on the toddler were bruises “from when she fell.”

Jurors at Lucio’s trial never heard these statements. Cameron County District Attorney Armando Villalobos withheld Arreola’s report from the defense, casting Mariah’s death as the violent culmination of “a cruel and brutal life” at the hands of her mother. Despite Lucio’s insistence that she was innocent, the DA’s office spent years defending her conviction, seeking an execution date in 2022. Lucio came within two days of execution before the Texas Court of Criminal Appeals intervened, sending the case back to the trial court to consider whether withholding the evidence had violated Lucio’s constitutional rights.

In a dramatic reversal, the DA’s office now admits that Villalobos failed to disclose the exculpatory statements. Today, Cameron County District Attorney Luis Saenz agrees with Lucio’s attorneys that, had the records been disclosed, Lucio likely would not have been convicted. In a joint filing with the attorneys, Saenz told the trial court that Lucio’s conviction should be overturned.

On April 12, two years after Lucio narrowly avoided execution, Cameron County Judge Arturo Nelson signed off on the agreement. The case is now back before the Court of Criminal Appeals, which will decide whether to grant the joint request to vacate Lucio’s conviction. If it does, Lucio will leave death row having spent 17 years imprisoned for a crime that never happened. There is no timeline for the court to rule.

In a statement, Lucio’s family thanked her legal team and the district attorney’s office alike. “We hope and pray the Court of Criminal Appeals will agree with the District Attorney, the defense, and Judge Nelson and our mother can........

© The Intercept