Former New York Yankees outfielder Brett Gardner is still reeling from the heartbreaking and sudden loss of his 14-year-old son, Miller, who died on March 21 while the family was staying at the Arenas Del Mar Beachfront & Rainforest Resort in Costa Rica.

Initially described as an “unimaginable loss” by the family in a statement, new developments have revealed that Costa Rican authorities are now investigating the teen’s death as a potential homicide.

“The purpose of the investigation is precisely to determine whether or not we are dealing with a possible homicide,” a spokeswoman for Costa Rica’s Prosecutor’s Office told ESPN on Thursday. “For this reason, it is not possible at this time to confirm or rule out that a crime has been committed.”

Miller was originally thought to have died from asphyxiation in his sleep due to food poisoning, but a toxicology report released in early April revealed no blockage of the windpipe. Instead, the report confirmed that Miller died from carbon monoxide inhalation, with “high levels” of the gas found in his hotel room—located adjacent to a mechanical room at the resort.

While the Judicial Investigation Agency of Costa Rica reported dangerously high carbon monoxide levels in the Gardners’ room, the resort disputed those findings, claiming the gas was confined solely to the machine room and did not seep into guest quarters.

Authorities remain in the first stage of their criminal procedure, collecting and analyzing evidence to determine whether formal charges will follow. A second stage of the process could involve official indictments and a trial.

As of now, the Gardner family has remained quiet regarding the new developments and has not issued any additional public statements beyond Miller’s obituary, published on March 31.

“The void Miller’s passing leaves in the hearts of his family, friends, teammates, teachers, coaches and others will be felt for years,” the obituary read.
“Miller’s time here with [his friends and family] was brief, but his spirit will carry on forever through those who were impacted by the way he lived. Miller was so blessed with experiences and friendships in his 14 years, and would want other children to have the opportunity to create their own wonderful memories.”

Brett Gardner, 41, played his entire 14-year Major League Baseball career with the Yankees, retiring in 2021. He was a key part of the team’s 2009 World Series championship, earned an All-Star selection in 2015, and won a Gold Glove in 2016. Despite his accomplishments on the field, the devastating loss of his son has brought an entirely different kind of heartbreak—one no parent should have to endure.

As the investigation continues, friends, fans, and the faith community are keeping the Gardner family in their prayers, trusting God’s comfort and justice in the midst of unspeakable grief.