the cobb county medical examiner believes the cause of death is consistent with hyper therm ya and the manner of death is homicide. information supporting a murder charge against the father justin harris. victor blackwell reports tonight. reporter: early wednesday morning exactly one week ago, justin ross harris was seen at this atlanta area chick-fil-la. the arrest warrant says after breakfast he was seen strapping his 22 month old soon cooper into the car seat and drove less than a mile away to this home depot support center where he s a web designer. normally harris takes cooper to a daycare center on site. not this day. instead he left the boy in the car faces back in the blazing georgia sun. he returned to the suv at lunchtime, opened the driver s side door and placed something inside and closed the door and walked off. the temperature outside hit 88
otherwise the medical examiner believes the cause of death is consistent can hyperthermia and suggest the manner of death is homicide. supporting a murder charge against the father, justin harris. victor blackwell reports tonight. reporter: early wednesday morning, exactly one week ago, justin ross harris was seen at this atlanta area chik-fil-a. the newly released arrest warrant after breakfast, harris was seen strapping his 22-month-old son cooper into his car sheet. drove less than a mile away to this home depot store support center where he works a a web designer. normally harris takes scooper to a day-care center on-site. but not on this day. instead, harris headed inside the office and let left his toddler in his rear facing car seat in the back in the blazing sun. harris returned to the suv at lunch time, opened the driver s side door and placed something inside. he then closed the door and walked off. the temperature outside hit 88 degrees that afternoon.
done type of thing. reporter: but police say it was all an act. when officers asked harris basic questions about his story, they say those answers just did not make sense. then police say harris cursed and screamed at them. they took him to police headquarters, questioned him further, and ultimately charged him with cruelty to a child and felony murder. he is fully aware of what he is charged with, and he will be entering a plea of not guilty at this time. reporter: more than 10,000 people signed an online petition urging the district attorney to drop the charges. i think it is impossible for this to have been intentional. there is no way it would have been intentional, especially from the father s reaction. reporter: but investigators did agree. a cobb county sergeant tells cnn what i know about this case shocks my conscience as a police officer, a father, and a grandfather. now what investigators want to know is why. victor joins us now from marietta, georgia with more. w
dramatic, hands in the air, looking up towards the sky, what have i done type of thing. reporter: but police say it was all an act. when officers asked harris basic questions about his story, they say those answers just did not make sense. then police say harris cursed and screamed at them. they took him to police headquarters, questioned him further and ultimately charged him with cruelty to a child and felony murder. he s fully aware of what he s charged with and will enter a plea of not guilty at that time. reporter: more than 10,000 people signed an online petition urging the district attorney to drop the charges. i think it is impossible for this to have been intentional. there is no way it would have been intentional, especially from the father s reaction. reporter: investigators disagree a. cobb county sergeant tells cnn what i know about this case shocks my conscience as a police officer, a father, and a grandfather. now, what investigators want to know is why. vict