'The Challenge' Star Tyler Duckworth Dead at 44

Tyler Duckworth from MTV's "The Challenge," is dead ... TMZ has confirmed.

Tyler died Tuesday after he was reportedly found unresponsive in a bathroom in North Dakota, where he had been living in recent years, according to The U.S. Sun.

Local officials reportedly classified his death as unattended, meaning no one witnessed it. The outlet also reports Tyler recently underwent surgery, though it's unclear if the procedure played any role in his death.

Paulie Calafiore tells TMZ ... Tyler was one of the first people to support him after he came out as bisexual, and remained a constant source of encouragement. He says they were together just two weeks ago, when Tyler told him to be proud of the impact he’s made beyond "The Challenge." Paulie says Tyler was excited about recovering from leg surgery and coming back stronger, making his sudden death especially shocking.

Mark Long tells TMZ ... Tyler was one of my favorites. I just got to spend some time with him at our Challenge Mann event in Minneapolis. He's always been the kind of person to light up a room with his smile and jovial spirit. This was a devastating loss for the Challenge family and my hopes and prayers go out to his family and loved ones."

Tyler made his final public appearance at a "Challenge Mania" event in Minneapolis on July 31, later thanking fans on Instagram for their support. He debuted on "The Challenge" in 2006, winning "Cutthroat" in 2010 and “Rivals” in 2011 before returning for "All Stars 2" in 2021.

He was 44.