The boy, whose identity was not released, died from pneumonia at a hospital in Miami.
He had a history of heart problems.
The hospital’s emergency room spokesman, David Richey, said the boy was transferred to a Florida hospital on Sunday after complaining of a fever and a headache.
A family member told NBC News that the boy had been in the hospital for several days and that he had been treated for respiratory issues.
The boy’s father, Brian Bynum, told ABC News that he was concerned about his son’s health.
He said his son was at a school and his father would check on him.
“I want my son to be alive,” he said.
“There’s nothing I can do.
The only thing I can say is God is watching him.
The best thing I could do is just pray for his family.”
He said he had no reason to suspect foul play, but that his son had a cold.
The Broward County medical examiner’s office said on Saturday that the cause of death was pneumonia, the Florida Times-Union reported.
The medical examiner said there was no evidence of foul play and that there was nothing unusual about the boy’s symptoms.
A Broward man who had a dispute with the boy and who had filed a complaint with authorities said he was angry about the son’s death and wanted the boy to die.
“If he had a fever, you can take that to the hospital,” said the man, who spoke on condition of anonymity because he was not authorized to speak publicly.
“That’s not how a human being should die.
He’s a human.
I want him dead.”
The man said the family had asked him not to speak with reporters about the case.
“It’s not my fault,” he told the newspaper.
The man also said the father had a long history of mental health issues.
“We are trying to get answers from him, but we are not being given answers,” the man said.
The father, who declined to be identified by name, said he called 911 to report the boy appeared to be having a fever.
“He was very agitated, he was pacing around the room.
I don’t know if he was agitated because he got sick,” he wrote in a police report.
“The boy was in a bad way, he could not breathe, he seemed to be very stressed out.”
The Browards County Medical Examiner’s office would not provide the man’s name or the name of the hospital.
A spokesman for the Florida Department of Children and Families said in a statement that the department was cooperating with the medical examiner.
The department did not have an official statement on the case and could not immediately be reached for comment.
A spokeswoman for the Broward Sheriff’s Office said officials there had not been notified of the boy, who had been transferred to another facility.
A spokesperson for the hospital said the medical department has been notified and will be conducting an investigation.
A man identified as the father’s lawyer, Scott Parnell, told The Associated Press on Saturday night that he did not believe the hospital had anything to do with the death.
“This is the worst death I’ve ever seen,” he tweeted.
“Our hearts go out to the family of this boy.”
He also posted on Facebook that the man who filed the complaint had left the hospital on Saturday, saying he was leaving to go home.
The incident was one of several in Florida that have raised questions about what medical procedures patients should undergo in the wake of the Ebola virus outbreak, which began in West Africa in late 2013.
In addition to the Florida boy, a Texas man who died on Friday in New Orleans also was being treated for pneumonia.
Officials there said the patient had been hospitalized for several months.
The case prompted Gov.
Greg Abbott to order a review of the state’s medical care for patients who have recovered from Ebola and is also being investigated by the U.S. Department of Health and Human Services.