High Levels of Carbon Monoxide Were Found in Miller Garner’s Hotel Room, Official Now Says

The general director of Costa Rica’s Judicial Investigation Agency has released new details about Miller Gardner’s death.

Miller died while he and his family were vacationing at the Arenas Del Mar Beachfront & Rainforest Resort on the morning of Friday, March 21.

According to a video statement from Randall Zúñiga posted on the agency’s YouTube account on Monday, March 31, while the investigation into the 14-year-old son of former New York Yankees player Brett Gardner remains ongoing, a “hazardous atmospheres” team conducted tests in the room his family was staying in.

“At that time, high levels of carbon monoxide contamination were detected in that room. Which then leads us to a line of investigation in which it appears that this person may have died from inhaling these very dangerous gases,” he said.

“In this regard, it is important to note that adjacent to this room, there is a specialized machine room, which is believed to contain some type of contamination in these rooms, and this could have caused some kind of contamination at the time,” continued Zúniga.

The official said the fire department and the Ministry of Health were also notified about the issue.

“We also have to wait for the final results of the forensic toxicology, which will determine exactly what caused the death of this young man,” said Zúniga.

Brett’s manager had no comment about the carbon monoxide update when PEOPLE reached out to him Monday. PEOPLE has reached out to the Arenas Del Mar Beachfront & Rainforest Resort for comment.

Juan Pablo Alvarado Garcia, an official with Costa Rica’s Judicial Investigation Agency, previously confirmed to PEOPLE that after meeting with a doctor from the Forensic Pathology Section of the Judicial Investigation Agency, the previous cause of death by asphyxiation in Miller’s case has been ruled out.

“The preliminary ruling ruled out asphyxiation as the cause of death. No macro-level abnormalities were observed in the respiratory tract upon inspection of the body,” Garcia said.

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In a statement on Monday morning, Costa Rica’s Judicial Investigation Agency confirmed to PEOPLE that Miller’s body was released by the local medical examiner’s office on Wednesday, March 26. They also shared with PEOPLE that the investigation into his death remains ongoing.