Court documents released Friday provide more information into the death of 4-year-old Zion McKeown on Maui.

On Wednesday, the boy's father, Kyle McKeown, and his live-in girlfriend, Grace Lee-Nakamoto, were arrested by police for murder in the second degree.  The couple was charged by police on Thursday.

Late Tuesday night, the couple brought McKeown's 4-year-old son to the Maui Memorial Medical Center Emergency Room.

Court documents say the boy was unresponsive and grey in color, meaning that he was dead on arrival.

The medical staff was able to revive the boy and prepared him for emergency surgery.

A doctor said the trauma sustained by Zion was consistent with someone who hit a concrete wall at approximately 65 mph.

The boy died on Wednesday as a result of his injuries.

An autopsy found that he died as a result of blunt force trauma to his lower abdomen.

Court papers say the injuries were most likely coming from someone stomping on his while he was lying on the ground.  There were also numerous bruises and abrasions on his arms, legs, face, back, chest, neck and back of his head.  All injuries were new and caused just prior to his time of death.

During separate interivews with McKeown and Lee-Nakamoto, they each said they did not know how the boy got the injuries other than when they performed CPR.  Both said he sustained injuries to his forehead from collapsing in the shower.