IRVING (CBSDFW.COM) – A 2-year-old boy died in the back of his family’s car on Thursday, and police say the death appears to be heat-related.

Officials with the Irving Police Department said that the boy’s family just moved to Irving from California. Thursday afternoon, the single mother and her nine children were unloading some of their belongings from their SUV.

Officers said that, after the family unloaded the vehicle, the mother told her children to go into the house. She then closed the SUV, because she apparently thought the children had gone inside.

Later in the evening, the woman could not find the 2-year-old boy and called the police. Soon after officers arrived, the boy was found inside the SUV. When paramedics arrived and examined the boy, he was already dead.

Police said that the medical examiner is still working to determine the cause of death, but it appears to be heat-related. “Based on our preliminary investigation, this just appears to be a very tragic accident,” said Officer John Argumaniz with the Irving Police Department.

Thursday’s high temperature was 103 degrees.

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