Corey HaimActor Corey Haim died from pneumonia complicated by an enlarged heart, bad lungs and narrowed blood vessels, while drugs found in his system played no role in his death, the Los Angeles County coroner said Tuesday.

Haim, 38, died of natural causes from "community-acquired pneumonia" along with lung, heart and blood vessel problems, according to an autopsy report.

Low levels of eight drugs, including both prescription and over-the-counter medications, were found in his system along with marijuana, coroner's spokesman Craig Harvey said.

"But nothing was at a level that would have contributed to his death," Harvey said.