The Texan woman, Cynthia Marie Randolph, 24, initially told investigators her two-year-old daughter and 16-month-old son locked themselves in the auto on May 26.
Parker County Sheriff's Department investigators arrested Cynthia Randolph after admitting that she left her kids in the auto to "teach them a lesson". She said when she noticed they were no longer there, she went looking for them and found them about a half-hour later locked in the auto.
Cynthia Marie Randolph, 24, was jailed Friday on two counts of causing serious bodily harm to a child. She says she thought they'd be able to get themselves out, so she went back to inside to smoke weed and fell asleep for hours.
Randolph told investigators that shortly after noon on the day of the deaths, she found the kids inside the auto and, using profanity, ordered the girl out.
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"When she woke, the defendant found her children in her vehicle, unresponsive", authorities added.
The pair were pronounced dead from suspected extreme heat exposure and the manner of death in each child is pending, according to the Telegram. She said she thought her daughter would be able to open the auto door and get out whenever she and her brother wanted to leave the vehicle. A bond had not been set and it wasn't immediately clear whether she retained an attorney, NBC Dallas-Fort Worth reported. Heatstroke begins when the body temperature reaches 104 degrees.
This year, 13 children have died nationwide after being left in vehicles, according to noheatstroke.org.
She claimed they were in the vehicle for no more than an hour.
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The Texas mom is now in custody at Park County Jail.
The children were identified as 1-year old Cavanaugh Ramirez, and 2-year old Juliet Ramirez.
In documents released Friday, the Parker County Sheriff's Department used Randolph's shifting statements about how her children died as probable cause to charge her.
Sheriff Fowler originally said on May 26, that any incidents involving any child are hard ones, but this call was especially heartbreaking with the unfortunate deaths of the two children.
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