ORANGE COUNTY, Fla. -

Deputies have released the 911 call made in the case of a father who authorities say abused his 5-year-old son and later died.

Darell Avant Sr., 26, was first charged with child abuse last Thursday and was then charged with first-degree murder the next day.

[RELATED: Man arrested in child abuse death | Dad charged with murder in son's death]

The Orange County Sheriff's Office said Avant was charged after he punished his son for misbehaving in school.

According to the report, Avant brought his son back to their apartment where Avant allegedly spanked his son several times and ordered him to do push-ups and squats for 20 minutes.

However, autopsy reports show the cause of death is blunt force trauma, deputies say, the result of a beating.

Avant then told his son to take a shower and sometime after that, his son passed out face down, deputies said. After 25 minutes, Avant called a friend over to help and the friend began to do CPR.

When deputies arrived, the child was dead and had bruises on his torso, back and arms.

On Monday, the Orange County Sheriff's Office released the 911 call Avant had made to authorities.

[LISTEN: 911 call released in boy's death]

"It's my son, he got in the shower and then just fell out," Avant said in the 911 call. "I mean, he's breathing, but he's not really breathing, he's unresponsive."

The dispatcher in the call asked Avant if his son got out of the shower and wasn't feeling well.

"I mean, I did some stuff...I did some stuff before he got in the shower," said Avant. "After that, he just got in the shower and he just fell."

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