By BEN NAGLE

Costa Rican authorities have confirmed once and for all that Brett Gardner’s son Miller died from carbon monoxide inhalation during a family vacation.

Mystery has surrounded the 14-year-old’s death since it was announced last week, with asphyxiation and food poisoning both ruled out by examiners, and the hotel denying claims carbon monoxide poisoning was the cause.

Now, though, the official toxicology report has been released, confirming that Miller passed away as a result of exposure to carbon monoxide, after a saturation level of 64% was found in his room.

The report, released by Randall Zuniga – general director of the OIJ – late on Wednesday, added that ‘concentrations above 50% are already lethal.’

He added: ‘In this case, the saturation percentage is higher, thus proving the police’s hypothesis that the death was due to exposure to carbon monoxide.’

Zuniga also confirmed that the case has now officially been closed.

Miller Gardner (second right) died suddenly while on a vacation with dad Brett (right), mom Jessica (second left) and older brother Hunter, 16 (left)

Miller Gardner (second right) died suddenly while on a vacation with dad Brett (right), mom Jessica (second left) and older brother Hunter, 16 (left) 

His body was found in his room at the Arenas Del Mar Beachfront & Rainforest Resort

On Tuesday, the cause of death remained shrouded in mystery after a spokesperson for the Arenas Del Mar Beachfront & Rainforest Resort – where the Gardners were staying – adamantly denied the police’s findings.

‘The levels in the hotel room were non-existent and non-lethal. There was an error in this initial reporting,’ a spokesperson for the resort told the New York Post. 

The police had initially reported ‘high levels of carbon monoxide contamination’ in the hotel room, but were awaiting confirmation from the toxicology reports.

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Yankees legend Brett Gardner’s son’s cause of death finally confirmed and case closed after toxicology report

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Read more at DailyMail.co.uk