Actor Cameron Boyce, known for his role in Jessie as Luke Ross and Descendants as Carlos, has died at the age of 20. His death was confirmed to ABC News by his family on Saturday night.

“It is with a profoundly heavy heart that we report that this morning we lost Cameron,” a spokesperson said on behalf of the Boyce family. “He passed away in his sleep due to a seizure which was a result of an ongoing medical condition for which he was being treated. The world is now undoubtedly without one of its brightest lights, but his spirit will live on through the kindness and compassion of all who knew and loved him. We are utterly heartbroken and ask for privacy during this immensely difficult time as we grieve the loss of our precious son and brother.”

Boyce, who was from Los Angeles, made his acting debut in the horror film Mirror when he was just 9 years old. Two years later, he appeared in Grown Ups as one of Adam Sandler’s children.

He first achieved fame with his role as Luke Ross in Disney Channel’s Jessie. His role in Descendants took him to greater heights.

Besides acting, Boyce had dedicated himself to charity work. He introduced former Vice President Joe Biden at his Biden Courage Awards in March, and he was honored with the Pioneering Spirit Award at last year’s Thirst Gala, sponsored by the Thirst Project, a nonprofit for which Boyce raised $30,000 to build wells for clean drinking water in Swaziland.

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“From a young age, Cameron Boyce dreamed of sharing his extraordinary artistic talents with the world. As a young man, he was fueled by a strong desire to make a difference in peoples’ lives through his humanitarian work,” said a Disney Channel spokesperson. “He was an incredibly talented performer, a remarkably caring and thoughtful person, and above all else, he was a loving and dedicated son, brother, grandson and friend.”

Boyce was set to appear as a series regular in HBO’s new show Mrs. Fletcher, which is a spinoff of the film American Satan, called Paradise City.