The 14-year-old son of longtime New York Yankees outfielder Brett Gardner has died.

Gardner and his wife, Jessica, announced the passing of Miller Gardner in a social media post distributed by the Yankees on Sunday.

“With heavy hearts we are saddened to announce the passing of our youngest son, Miller. He was 14 years old and has left us far too soon after falling ill along with several other family members while on vacation,” the Gardners wrote. “We have so many questions and so few answers at this point, but we do know that he passed away peacefully in his sleep on the morning of Friday, March 21st.”

The family did not disclose the location of their vacation or his death.

The Yankees issued a statement in support of the Gardners.

“Words feel insignificant and insufficient in trying to describe such an unimaginable loss. It wasn’t just Brett who literally grew up in this organization for more than 17 years — so did his wife, Jessica, and their two boys, Hunter and Miller,” the team said.

“We grieve with Brett, Jessica, Hunter, and their community of family and friends in mourning the loss of Miller, who had a spark in his eyes, an outgoing and feisty personality, and a warm and loving nature.

“Our love for the Gardner family is unconditional and absolute, and we will offer our enduring support while understanding their desire for privacy at this time.

“May Miller rest in peace.”

In their post, the Gardners said of Miller:

“Miller was a beloved son and brother and we cannot yet comprehend our life without his infectious smile. He loved football, baseball, golf, hunting, fishing, his family and his friends. He lived life to the fullest every single day.”

Gardner, 41, made his major league debut in 2008 and played 1,688 games with the Yankees through the 2021 season. He won the World Series with New York in 2009.