There is new evidence coming out in the case of a Georgia father accused of killing his son by leaving him in a hot car.

Law enforcement officials say Justin Ross Harris may have searched the Internet on his work computer to see how long it would take for an animal to die in a car, according to My Fox Atlanta.

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Harris is accused of leaving his 22-month-old son Cooper in a hot car for seven hours while he went to work at Home Depot’s corporate office. The incident happened last Wednesday, when it was 91 degrees out.

While Harris says he forgot to drop the toddler off at day care, investigators say he went back to his car during his lunch break and left the child alone for a second time.

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Harris is charged with felony murder and cruelty to the child. He is being held without bond.