Ramos has now been charged with first-degree murder.
The 15-year-old boy confessed to strangling his mother, 46-year-old Gail Cleavenger, with a rope in their family's home early Friday then using a wheelbarrow to load her into her van and bury her beneath a fire pit, the Volusia County Sheriff's Office said.
WFTV reported that Ramos allegedly strangled his mother and they got into a fight over a "D" grade he received in school.
Ramos went to school the next day as normal, before dialing 911 when he got home afterwards. Chitwood said Ramos used his knowledge of crime scene analysis to disguise the scene where he had buried his mother's body.
In this Reuters News video, Volusia County Sheriff Mike Chitwood says a 15-year-old boy confessed to strangling his mother to death and shares some detail of the boys actions. Fox News reported that the boy's father was in Seattle on business.
The DeBary teenager accused of strangling his mother to death because of an argument over school grades will remain in detention, a judge ruled Sunday.
Nearby the home, deputies recovered the dumped property that was removed from the home in the fake burglary - computers and other electronics including a Playstation 4, a rifle and other items. He called the suspect a "soulless individual", and probably one of the "top three sociopaths" he ever crossed paths with.
Ramos' attorney, public defender Larry Powers, appointed by the court, did not have much to say and agreed with the judge's decision that probable cause existed to detain Ramos on the murder charge. The burglars must have taken her, he told Volusia County Sheriff's Office investigators. "By all accounts she was an wonderful human being", Chitwood said.
The sheriff said the case has been one of the most disturbing and saddest he has encountered. "All our hearts break for this family", Chitwood tweeted on Saturday.
The boy, who is not being identified by HuffPost as it's not clear whether he will be charged as an adult, had taken criminal justice classes at a university and had been fascinated with the investigation to the point that he invited the sergeant to go "admire his work" at the crime scene, Pagliari said.