GRAND JUNCTION, Colo.- Snowmobiler Caleb Moore, 25, died early Friday morning as a result of critical injuries he sustained last week at the Winter X-Games, now confirmed by Pitkin County Deputy Coroner Eric Hansen.

Several national media outlets reported Moore's death Thursday, citing a statement released by the snowmobile racer's publicist.

However, according to a member of the Pitkin County Coroner's Office - that wasn't the case.

Hansen insisted Moore was still on life support in the hospital's intensive care unit.

Many of you have questioned why NewsChannel 5 didn't also report Moore as deceased Thursday, and wondered why the Pitkin County Coroner's statement mattered.

To clarify: Caleb Moore sustained his initial injuries in Aspen, which means the Pitkin County Coroner has jurisdiction. We would not report anyone deceased until the coroner can confirm it.

Nonetheless, coroner's officials are now confirming that he has passed.

A statement released by the family's publicist reads, in part:

"He will be truly missed and never forgotten. The family wishes to express their deep gratitude for all the prayers and support they have received from all the fans, friends and family around the world that Caleb has inspired."

Members of the sports world are reacting on Twitter to the reports of Moore's passing.

New York Jets quarterback Tim Tebow wrote: "So sad to hear about the passing of snowmobiler Caleb Moore. My prayers go out to his younger brother Colten & their entire family."

Freestyle skier Kaya Turski wrote: "The spirit of Caleb Moore will be floating among us forever. RIP."

Surfer Kelly Slater tweeted: "Tragic. Don't even know what to say."

Again, the Deputy Coroner of Pitkin County has now confirmed that Caleb Moore was pronounced dead late Thursday night or early Friday morning.

It's the first fatality in the 17-year history of the X Games.

To donate money to Moore's family to cover medical expenses, visit www.giveforward.com/calebmoore