A 3-year-old boy was found dead inside a hot car on the campus of the University of Southern Indiana on Tuesday after his father reportedly forgot to drop him off at daycare.

Vanderburgh County Sheriff's deputies said Oliver Dill was found unresponsive by his father, Dr Andrew Dill after he was left in a hot car for several hours.

Oliver Dill was found unresponsive by his dad, Dr Andrew Dill, after he was left in a hot car for several hours on the campus of University of Southern Indiana on Tuesday. Photo / USI
Oliver Dill was found unresponsive by his dad, Dr Andrew Dill, after he was left in a hot car for several hours on the campus of University of Southern Indiana on Tuesday. Photo / USI

Deputies responded to the father's 911 call around 1.45pm Tuesday afternoon and attempted life-saving measures on Oliver, who was later pronounced dead at the scene.

Authorities said Dill, who is an assistant professor of accounting at USI, forgot to drop Oliver off at the Children's Learning Center on campus earlier that morning.

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When the married, father-of-two went to pick his son up, he realised Oliver was still in his car seat.

Temperatures reached nearly 32C, making the temperature inside the vehicle between 40C and 48C by Tuesday afternoon.

USI president Ronald S. Rochon issued a statement following Oliver's death.

"The Children's Learning Center will be closed tomorrow, July 10, and we are assessing if it will reopen later in the week.

"We understand this will be inconvenient for parents who need childcare, but our thoughts right now are in supporting the individuals who are deeply affected by this tragedy and will need some time to process their grief to best support the children in their care.

"Our deepest condolences go out to the family of this young child. This is a loss no parent should bear.

"If you have a child in your life, please hug them tight and remember that counselling services are available if you need them."

Vanderburgh County Sheriff Dave Wedding said no arrests are being made at this time.

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Authorities will submit the case file to the Vanderburgh County Prosecutor's office for final review.

Deputies responded to the father's 911 call around 1.45pm Tuesday afternoon and attempted life-saving measures on Oliver, who was later pronounced dead at the scene. Photo / 44 News
Deputies responded to the father's 911 call around 1.45pm Tuesday afternoon and attempted life-saving measures on Oliver, who was later pronounced dead at the scene. Photo / 44 News
Authorities said Dill, who is an assistant professor of accounting at USI, forgot to drop Oliver off at the Children's Learning Center (pictured) on campus earlier that morning. Photo / 44 News
Authorities said Dill, who is an assistant professor of accounting at USI, forgot to drop Oliver off at the Children's Learning Center (pictured) on campus earlier that morning. Photo / 44 News
USI president, Ronald S. Rochon, issued this statement following Oliver's death. Photo / USI
USI president, Ronald S. Rochon, issued this statement following Oliver's death. Photo / USI