02/08/2008 AT 05:25 PM EST
Actor Brad Renfro's death has been attributed to "acute heroin/morphine intoxication," according to a statement from the Los Angeles County Coroner's office.
"The final manner of death has been ruled an accident," the coroner's office said, adding that the drugs were injected.
The 25-year-old actor, who starred in 1994's The Client
and, later, Apt Pupil
, had recently completed a movie with Winona Ryder and Billy Bob Thornton. Renfro was found dead
in a Los Angeles apartment on Jan. 15.
Renfro's troubles go back to 1997, when he was sentenced
to two years of probation after he tried to steal a yacht.
This was the second coroner's report
issued for an actor this week. On Wednesday, the determination was announced that Heath Ledger
also died from an accidental overdose, though of prescription drugs.
first reported the findings of the toxicology report on Renfro.