A toxicology report on Cooper Harris, the Georgia toddler who died in a hot car, has come back negative, police say.
Officials did not specify which substances they tested for, The Associated Press reported.
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The child's father, 33-year-old Justin Ross Harris, faces murder and child cruelty charges in the June 18 death. Harris has said he left the boy in the SUV for about seven hours after forgetting to drop him off at day care, but officials later said both
he and the child's mother had done Internet research on children dying in hot cars.
Toxicology tests typically are used to detect foreign substances such as drugs in a person's system.
Authorities aren't discussing further details of the results for 22-month-old Cooper Harris' body, Cobb County police spokesman Mike Bowman said Friday.
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