Actor Evan Ellingson’s cause of death has been ruled as an accident.

The actor, who was best known for his role opposite Cameron Diaz in 2009 drama film “My Sister’s Keeper,” passed away as a result of an accidental fentanyl overdose, a spokesperson for the San Bernardino County Sheriff’s Department coroner told media outlets Tuesday.

The news comes nearly a month after Ellingson passed away died in his Fontana, California residence at age 35. Ellingson struggled with addiction and drugs throughout his life, and his father Michael told TMZ his son was living at a sober-living home.

At the time of his death, Ellingson had not appeared in front of the camera for over a decade. In addition to “My Sister’s Keeper,” which also starred Alec Baldwin, Abigail Breslin and Jason Patrick, Ellingson can be recognized from his recurring role on “CSI: Miami.” In the procedural broadcast show, he played Kyle Harmon...