At around 9:30 am Tuesday, a 21-year-old woman arrived for work in Brandon, Florida, according to the Hillsborough County Sheriff's Office.
The woman returned to the vehicle hours later, according to authorities. That's when, at around 2:30 p.m., she discovered the child, who was unconscious. Jacob was taken to a hospital, the sheriff's office said in a news release, where he died.
Investigators who spoke to the station said Jacob's half sister was "distraught" when she discovered the toddler during a break.
No charges had been filed Tuesday, according to a sheriff's office. Authorities were speaking to the 21-year-old woman as well as other witnesses.
The National Weather Service estimated that the outside temperature in the area was about 90 degrees about 2:30 p.m. Tuesday.
There were more than 30 heat stroke deaths involving children who were left in cars in 2016, according to noheatstroke.org, a website that tracks such incidents. There have been two in 2017, a total that included the death of Jacob Manchego, according to the site.
Source: The Washington Post