The hotel where Miller Gardner, the 14-year-old son of former New York Yankees outfielder Brett Gardner, was found dead nearly half a year ago was raided by authorities on Thursday (September 11), ESPN reported.

Prosecutor Kenneth Alvarez told ESPN that a three-hour raid took place at the Arenas Del Mar Beachfront & Rainforest Resort in Manuel Antonio in order to collect evidence linked to an autopsy's ruling that Miller died of carbon monoxide poisoning.

"Let us remember that what was done at that time was the measurement of toxic substances at the site," Alvarez told ESPN during what served as his first media interview about the case. "Based on those tests, a second proceeding was scheduled, which was carried out today to collect evidence."

In April, a toxicology report confirmed that Miller died from carbon monoxide poisoning.

“The toxicology results are in, and the carboxyhemoglobin test found a saturation of 64%. Concentrations above 50% are already lethal,” said Randall Zúñiga, general director of Costa Rica's Judicial Investigative Agency, via the local newspaper CRHOY.

The confirmation came two days after Zúñiga and local authorities announced carbon monoxide poisoning as the suspected cause. The Gardners' hotel room was found to have had "high levels" of the noxious gas when Miller, 14, died suddenly on March 21.

The teenager was reported to have fallen seriously ill along with several family members during the vacation.

“It’s also important to note that next to [the family’s] room there is a specialized machine room, from which it is believed some form of contamination may have reached the guest rooms, potentially causing the incident,” Zúñiga said in Spanish at a virtual press conference on Monday via the New York Post.

“Nonetheless, the initial investigative findings indicate that the incident was due to this contamination, with levels as high as 600 parts per million detected — when the appropriate level in this case should be zero,” he added.

Earlier reports had indicated that Miller was suspected to have potentially died from asphyxiation, which was later ruled out. Brett Gardner, 41, who spent his entire 14-year MLB career with the Yankees from 2008 to 2021, as well as his entire minor league career within the organization from 2005 to 2008, and his wife, Jessica, released a statement announcing their son's death on behalf of the team on March 23.

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