WXIA-TV, Atlanta

COBB COUNTY, Ga. — New search warrants released Sunday show the mother of a Georgia toddler who died in a hot car also admitted to police she researched hot-car deaths and "how it occurs."

Leanna Harris hasn't been charged in the death of her son, 22-month-old Cooper. But a search warrant released Sunday said the woman went onto the Internet before the child's death to search for information about children dying in cars.

Police say Cooper died after being left in the backseat of an SUV by his father June 18.

Justin Ross Harris is charged with murder and child cruelty after his son, Cooper, died after being left in the car for more than seven hours while Harris was at work. Harris claims he simply forgot his child was in the back seat. According to a police warrant filed after the child died, it was 88 degrees at 5:16 p.m.

The warrants were for electronic devices taken from the Harris home as well as devices that were in Harris' car.

Cooper's funeral was Saturday. His father, who was not allowed to attend the funeral in Tuscaloosa, Ala., called the funeral and spoke by speaker phone to those attending.

He told the crowd gathered "thank you for everything. I'm sorry I can't be there."

Leanna Harris said "Ross is, was and will be a great daddy," to which family and friends gave a standing ovation, Leanna told the crowd she is not angry with her husband over their son's death.

Around 200 people attended the services for Cooper. Church officials said the family would not make any statements to the media. But inside the funeral they spoke glowingly of Justin Harris who was listening via speakerphone from jail.

Earlier in the week Cooper's family requested a flash drive of pictures of Cooper to show at the funeral. That request was denied by Cobb County, Ga., police who said they needed to protect the integrity of the evidence. Because of the controversy and media attention surrounding this case, there was a heavy police presence. After the funeral the family left for a private burial.

Police released the search warrants for Justin Harris on Saturday morning. The newly released search warrants show police searched his home, computer, cellphone and car.

According to the official warrants, Justin Harris stated that he "recently researched, through the Internet, child deaths inside vehicles and what temperature it needs to be for that to occur."

Contributing: The Associated Press