Justin Ross Harris, 33, initially told police he forgot to take his son Cooper to day care on the morning of June 18 before heading into work at The Home Depot’s headquarters in Cumberland.
By the time Harris made his way home that afternoon, Cooper was dead.
An updated arrest warrant obtained Wednesday indicates Harris left his office, went out to his car and opened the driver’s side door to “place an object in the vehicle.”
Police say he still did not acknowledge the dead toddler, who was strapped into a rear-facing car seat in the center of the backseat, until he had driven part of the way home.
Harris pulled into a shopping center off Akers Mill Road shortly after 4 p.m. that afternoon and begged strangers there for help.
Police say the investigation is ongoing and more information is expected to be released in the coming days.
Sources familiar with the investigation have said the death of the toddler does not appear to have been an accident.