Cameron Boyce: Disney Channel star dies at 20

Disney Channel star Cameron Boyce has died at age 20.

Boyce, who starred on Descendants and Jessie, died in his sleep “due to a seizure which was a result of an ongoing medical condition,” his family tells ABC News.

Adam Sandler, who played the actor’s father in the Grown Ups movies, paid tribute to his co-star on Twitter. “Too young. Too sweet. Too funny. Just the nicest, most talented, and most decent kid around. Loved that kid. Cared so much about his family. Cared so much about the world.”

Fellow Disney star Zendaya tweeted, “Absolutely heartbreaking, my heart goes out to his friends and family.”