By Kate Ward
May 04, 2010 at 09:06 PM EDT

According to People, the coroner assigned to Corey Haim’s death found that drugs did not contribute to the actor’s tragic March 10 death. Instead, Haim was found to have passed away from “damage to the air sacs in his lungs, pneumonia, and a hardening of his heart muscle with plaque build-up within the blood vessels.” The actor had been suffering flu-like symptoms prior to collapsing in his mother’s L.A. apartment.