A Wylie toddler died Thursday after she was left in the family's sport utility vehicle for nearly three hours.
Investigators said Carson Adams died after being left in her car seat while other family members were in the home.
The child's father told police he had five children in his care, ages 9, 8, 7, 6, in addition to Carson. He said the group went in the home at about 2:30 p.m. Thursday and thought Carson was with the other children.
Nearly three hours later, as they got ready for soccer practice, the father realized Carson was missing. After a search around the home, the father found his daughter in the SUV.
The official high temperature at Dallas/Fort Worth International Airport reached 103 degrees at 6 p.m. on Thursday.
Investigators said the temperature in the vehicle was 130 degrees after police arrived. The child's body temperature was 108 degrees when EMS workers checked.
The father called 911 and performed CPR, but the child died.
Wylie police and the Collin County Child Abuse Task Force are investigating. So far, no charges have been filed.
NBCDFW's Julie Tam contributed to this report.