Michael Tylo, Jr. drowned and was pronounced dead at 11:55 p.m. on Thursday in Henderson, Nev., according to the Clark County Coroner, Michael Murphy.
"It has already been determined that this was an accident," Murphy tells PEOPLE. "Looking at the report, it appears that he fell in the pool after having some sort of medical event. It says on the report that he had a seizure disorder."
The death, first reported by TMZ.com, occurred at a residence, and Michael Tylo was discovered by an unidentified family member, says Murphy.
"We are doing a toxicology report, but that is standard with all bodies that come to us," adds Murphy. "That information won't be available for several weeks. With this already having a cause of death, like a medical condition, it appears pretty evident that this is reason for him falling in the pool."
No Comment from Her ShowA rep for The Bold and the Beautiful tells PEOPLE, "Hunter is not commenting at this time. But I can confirm that her son Michael, who is 19, died yesterday in Henderson, Nevada."
Tylo has been through difficult family times before.
In 1998, she and her husband Michael were told that their infant daughter, Katya, had a rare cancer of the right eye called retinoblastoma. Doctors removed the eye and began chemotherapy, but later in the year tumors were detected in Katya's other eye. To the amazement of her doctors, those tumors soon inexplicably disappeared. Katya recovered and wears a prosthetic right eye.
At the time, Tylo told PEOPLE that she relied on the power of prayer for strength.
"If I'm having a rough day," she said, "I remember this psalm that says, 'Revive me, O Lord.' It really helps. It's better than any beauty treatment."
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