The 19-year-old son of soap opera star Hunter Tylo died in an accidental drowning Thursday night in the family's swimming pool in Henderson, Nevada, according to the Clark County Coroner's Office.
Michael Tylo Jr., the Bold and the Beautiful actress' oldest child with husband Michael Tylo (and pictured here with his parents when he was 12), was discovered in the backyard by an unidentified family member. He was pronounced dead at 11:55 p.m.
A coroner's spokesman told E! News it appeared as if the teenager, who suffered from a seizure disorder, had a seizure and then fell into the pool. Toxicology tests have been ordered as part of the office's standard procedure, and the results should be available within a few weeks.
The Tylos, who tied the knot in 1987, also have two young daughters, Izabella, 10, and Katya, 9. Hunter Tylo also has a 27-year-old son, Christopher, from her first marriage to Tom Morehart.
Tylo's rep could confirm the tragic turn of events but said the actress and her family, who have battled through tough times before, are not commenting at present.
In 1998, Katya, who was then four months old, was diagnosed with retinoblastoma, a rare form of eye cancer that required the removal of her right eye. Surgery and chemotherapy seemed to do the trick, however, and although the child developed similar tumors in her other eye at one point, they disappeared and she has been cancer free for years.
Tylo sits on the board of Retinoblastoma International and started her own charity, Hunter's Chosen Child, to raise awareness of the disease.
The 45-year-old actress famously sued producer Aaron Spelling for wrongful termination in 1997 when she was unceremoniously fired from Melrose Place after announcing she was pregnant. She eventually won a $4.89 million judgment, but the role of Taylor McBride went to Lisa Rinna.
Tylo started playing Dr. Taylor Hayes on The Bold and the Beautiful in 1992 and joined the show full-time in 1998.