Caleb Bankston, a contestant on the "Blood vs. Water" edition of Survivor, was killed on Tuesday when the train he was riding in Alabama derailed and crashed.
He was 26 years old.
Bankston worked at the Alabama Warrior Railway in Birmingham and finished in ninth place on the CBS competition last year; he competed alongside his fiancé, Colton Cumbie.
"Caleb was an amazing man and friend," fellow contestant Aras Baskauskas tells People. "One of the sweetest and most sincere humans I've ever come across. I am gutted by his loss. My thoughts and prayers are with his family."
Bankston is the third Survivor contestant to pass away since the show premiered.
In 2010, Jenn Lyon (fourth on Survivor: Palau) died after a six-year battle with breast cancer, while BB Andersen (a competitor on the original Survivor) died of brain cancer at age 77.
Sabrina Thompson competed on Survivor: One World with Cumbie and added:
"While playing Survivor with Colton, he would talk about his boyfriend, Caleb, around the clock 24/7. Within seconds of meeting Caleb at the finale and Survivor events, it's no wonder why he raved about him. You were instantly drawn to his big smile, warm spirit and Southern charm. May God rest his soul … gone too soon."