Mariah Thomas, 28, was sentenced to 13 years in Missouri state prison after pleading guilty to first-degree endangering the welfare of a child resulting in death. The first-degree murder charge against her was dismissed under a plea agreement. The case followed the February 2024 death of her 1-month-old daughter, who was found with severe burns inside a Kansas City home. Thomas will receive credit for time already served and will not receive probation.
| 1) | Plea agreement ends murder prosecution |
| 2) | Infant found dead after emergency call |
| 3) | Investigators documented the scene |
| 4) | Court approves sentence and conditions |
| 5) | Prosecutors describe the loss |
Plea agreement ends murder prosecution
Thomas pleaded guilty on Tuesday to first-degree endangering the welfare of a child resulting in death in Jackson County. The agreement imposed a 13-year sentence in the Missouri Department of Corrections and removed the first-degree murder count from the case. She received no probation and was credited for time she has already spent in custody.
The plea resolved the case more than two years after the child’s death. The judgment states that Thomas entered the plea freely and voluntarily, understood the charge and consequences, and did not raise a mental disease or defect defense.
Infant found dead after emergency call
The incident occurred on February 9, 2024, at a residence in Kansas City, Missouri. Officers were called at about 1:30 p.m. after receiving a report that a baby was not breathing. They found the 1-month-old girl with apparent burns across her body.
Kansas City Fire Department personnel pronounced the child dead at the scene. The infant was later identified as Za’riah Thomas. Investigators said Thomas had intended to put the baby down for a nap but reported that she accidentally placed the child in an oven instead of a crib.
Investigators documented the scene
According to investigative documents, a family member told detectives that Thomas said, “I thought I put her in her crib and I accidentally put her in the oven.” The child was wearing a bodysuit over a diaper, and investigators reported that the clothing appeared to have melted onto the diaper.
Police also recovered a baby blanket with significant burn marks in the living room. Thomas initially declined to speak with detectives after being advised of her rights, but she agreed to provide a blood sample and permitted investigators to access information from her cellphone.
“I thought I put her in her crib and I accidentally put her in the oven.”
Court approves sentence and conditions
Judge Sarah A. Castle accepted the guilty plea and imposed the negotiated prison term. Thomas was returned to Jackson County sheriff’s custody while awaiting transfer to state prison.
The court ordered Thomas to pay $68 to Missouri’s Crime Victims’ Compensation Fund and waived all other court costs. The sentence reflects the child-endangerment conviction rather than the murder charge, which prosecutors agreed to dismiss as part of the resolution.
Prosecutors describe the loss
When the original case was announced in February 2024, then-Jackson County Prosecutor Jean Peters Baker described the death as a gruesome tragedy and expressed sympathy for the child’s family. The initial complaint charged Thomas with first-degree endangering the welfare of a child resulting in death. Court records show prosecutors later added the first-degree murder charge before it was dismissed through the plea agreement.
The case concluded with Thomas’s prison sentence, while the court’s findings established the conviction and financial obligation tied to the child’s death. No further sentencing conditions, beyond the prison term and compensation payment, were imposed in the judgment.
| No. | Key Point |
|---|---|
| 1 | Thomas pleaded guilty to first-degree child endangerment resulting in death. |
| 2 | She was sentenced to 13 years in Missouri state prison. |
| 3 | A first-degree murder charge was dismissed under the plea agreement. |
| 4 | The child died in February 2024 after suffering severe burns. |
Summary
The case ended with a 13-year prison sentence after Thomas admitted to the child-endangerment offense connected to her daughter’s death. The murder charge was dismissed as part of the negotiated resolution, and the court ordered payment to the state’s Crime Victims’ Compensation Fund. The judgment closes the criminal proceedings arising from the February 2024 incident in Kansas City.
Frequently Asked Questions
What sentence did Mariah Thomas receive?
Thomas received 13 years in the Missouri Department of Corrections after pleading guilty to first-degree endangering the welfare of a child resulting in death.
What happened to the murder charge?
The first-degree murder charge was dismissed under the plea agreement.
When did the child’s death occur?
The child died on February 9, 2024, at a Kansas City residence after emergency personnel found her with severe burns.

