A man police believe intentionally killed his son remains in jail, and a trial date remains distant one year after a young boy died inside a hot car in Georgia 

Cooper Harris, 2, died after he was left inside his father's hot car for more than seven hours on June 18, 2014.

At first, many expressed outrage that his father, Ross Harris, was charged with his death, but as more evidence came to light, the pendulum swung the other way. Many say they will never forget the emotions felt that day.

"Obviously it was a bit dramatic, hands in the air looking up towards the sky, 'What have I done?'" said a witness who was in the Akers Mill shopping center where Ross Harris allegedly discovered his son that day.

Ross Harris stopped there after leaving work, getting out of his car and screaming that his child was lifeless in the back seat.

Investigators said Cooper Harris likely died of hyperthermia hours earlier as he sat in the car in a parking deck at the Home Depot headquarters where Ross Harris worked.

Some who witnessed Harris in the parking lot stood up for the Cobb County father.

"His initial reaction was too organic for it be planned from what I can see," said one witness.

Despite that, Ross Harris left the scene in a squad car and has been in custody ever since.

Police said they’ve doubted his story that it was all a tragic accident.

A detective later testified that Ross Harris had left Cooper in his car after only a few-minute ride from a nearby restaurant, even visiting his car at lunch but never touching his son. The detective said Cooper Harris was dying in the back seat of the SUV while Ross Harris was up in his office allegedly sexting women on his work computer.

District Attorney Vic Reynolds told WSB Thursday the investigation generated as much evidence as interest in this case. He said this case is more challenging than most because of the voluminous amounts of material handed over to the Harris defense team.

"There are occasionally cases, and this is one, where there is a great deal of discovery and that takes, in all fairness, both sides a while to go through," said Reynolds.

Reynolds told Cavitt because there is so much evidence there will likely be motions hearings held maybe this fall, and a trial possibly next year.

Maddox Kilgore, the attorney for Ross Harris, would not comment on the case or say how his client is doing in jail, only saying he's preparing for a trial whenever it might be scheduled.