The Santa Margarita woman found dead in her shower earlier this summer died of natural causes, the San Luis Obispo County Sheriff's Department released Tuesday.
After a nearly three-month investigation, authorities and the coroner determined that Janet Lucille McCarthy, 44, died of a heart condition on the morning of June 12.
Authorities previously said that McCarthy had medical problems, but declined to further elaborate.
At the time, investigators decided to run a toxicology report "in an abundance of caution," they said.
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Extensive toxicology, tissue and medical tests revealed she died of a heart condition, Sheriff's Department officials said. Authorities haven't disclosed if McCarthy knew she had a heart problem.
McCarthy was planning to leave town on a trip, investigators said, when a friend who was taking her to the airport that morning found her body in the 22000 block of K Street in Santa Margarita. McCarthy's husband and the friend found her unresponsive in the shower at about 5:15 a.m.
The District Attorney's office reviewed the medical findings with the detectives' case, according to authorities, and also determined that there was no foul play in her death. -Tonya Strickland