Evan Ellingson, a former child star of films like "My Sister's Keeper" and "CSI: Miami," has passed away at the age of 35

Ellingson was found dead on Sunday in a home in Fontana, California. The cause of his death has not been determined.

LOS ANGELES - Evan Ellingson, a former child star known for his roles in high-profile movies and TV projects such as "My Sister's Keeper" and "CSI: Miami," has died, officials confirmed. He was 35.

According to the San Bernardino County coroner's office, he was found dead in a bedroom of a home in Fontana, California, on Sunday. The cause of death is under investigation.

A representative for Ellingson did not immediately respond to a request for comment.

Ellingson's father, Michael Ellingson, told TMZ that his son was found in a sober living home.

"Evan had been sober for three years and often shared his recovery journey through performance and service," the family's statement said. "He enthusiastically directed people to resources for help, and he had a recent relapse after being prescribed opioids following dental surgery."

The statement noted that while the family is mourning, they "cherish every moment of joy, laughter, and love he brought to us and so many others."

Ellingson first appeared on television screens in 2001 on the soap opera "The Young and the Restless" and then had a recurring role in the Fox sitcom "Titus" from 2001 to 2002.

His notable film roles include appearing in Clint Eastwood's 2006 film "Letters from Iwo Jima" and the 2009 film "My Sister's Keeper" starring Cameron Diaz.

Ellingson is perhaps best known for his role in 18 episodes of "CSI: Miami" as Kyle Harmon, the son of Horatio Caine (David Caruso), from 2007 to 2010.

Based on his IMDb profile, it appears he took a break from acting after "CSI: Miami," his last credited role.