Brayden Smith, the last person to win Jeopardy! before longtime host Alex Trebek’s death, died at the age of 24.

The cause of Smith’s death is unclear. Smith’s mother, Debbie Smith, announced her son’s death Friday on Twitter, saying the family is “heartbroken” but that they are “so grateful that Brayden was able to live out his dream” on Jeopardy!.