Victoria Lee, a rising MMA star, who was undefeated with a 3-0 professional record since her debut in 2021, died on December 26. A cause of death was not given.

On December 26, 2022 our family experienced something no family should ever have to go through…,” Angela Lee wrote along with a picture of her younger sister in a sunflower field. “It is incredibly difficult to say this…Our Victoria passed away.”

Singaporean combat sports promotion ONE Championship, which Victoria Lee had been with since 2020, also confirmed Lee’s death on social media.

The ONE Championship team is devastated over the tragic passing of Victoria Lee,” the company said in a tweet. “We send our most heartfelt condolences to her family and friends at this difficult time.

Victoria, who was born in Hawai’i but represented Singapore in competition, did not fight in 2022. She was scheduled to compete in her fourth MMA bout on Jan. 14.

Victoria is survived by her parents, Ken and Jewelz Lee, her sister Angela, 26, brothers Christian, 24 and Adrian, 17, and niece Ava, 1, who Angela shares with her husband Bruno Pucci.