Eleven-month-old Joseline Eichelberger died on Sunday afternoon after being left in a parked car for 15 hours.
Temperatures in Calverton Park, Missouri, surged into the high 70s on Sunday.
What are the details?
Calverton Park Police said that first responders arrived on the scene after receiving a 911 call, but it was too late to save the child.
Calverton Park Public Information Officer Chris Robertson told KTVI-TV that the temperature inside the vehicle was likely much higher than outside the car.
"Temperatures reached about 79 degrees that afternoon which inside of a hot vehicle can get much hotter," Robertson said.
The PIO also noted that the department is working together with the St. Louis County Prosecutor's Office.
"It's heartbreaking when there's any life lost, especially when you're dealing with a child and of an age that young," he added.
So what's the story behind it?
The child's grandmother said that she discovered the child inside the vehicle, which was parked in her driveway. She and other members of the family reportedly said that the child's parents inadvertently left the child inside the car. Each of the parents apparently believed that the other had brought the child out of the car.
Neither had done so.
What was the reaction to the child's death?
Lilly Belfield, a family cousin, told the station, "Nobody would intentionally do that. If you saw her smile, laugh, giggle, you would think the same thing. Nobody would ever hurt this baby."
The child's grandmother reportedly told the station that the parents "made an innocent mistake."
One neighbor doesn't seem to be as forgiving.
Velvet Warren, who lives nearby, said that this incident occurred because of neglect.
"This is ridiculous," Warren said. "The baby did not deserve to die."
Warren hopes that the parents are charged in connection with the child's death.