(CNN) -- What sounded like the most tragic of accidents -- a dad absentmindedly leaving his toddler in the car on a scorching Georgia day -- is now being treated by police as a horrific crime. Two new details were added to a revised Cobb County criminal warrant Tuesday: Not only did Justin Ross Harris put his son in the car minutes before arriving at work on June 18, but he also returned to his car hours later during his lunch break. Harris placed his son, 22-month-old Cooper, into a rear-facing child restraint in the backseat of his Hyundai Tucson after eating breakfast at a fast-food restaurant. He then drove to his workplace, a Home Depot corporate office about a half-mile away, according to the warrant.
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Child cruelty charge downgraded from first to second-degree
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Justin Ross Harris has been charged with murder in the death of his son
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The boy was left in a hot car, strapped to his seat in suburban Atlanta last week
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Investigators say Harris returned to his car hours before he said he found his son
According to an obituary on legacy.com, @placeholder "was a happy baby.