Marysville House Fire Takes More Victims: Mother And Son -- Cause Still Is Undetermined; Electrical Blaze Is Ruled Out

A 3-year-old Marysville boy and his mother died yesterday in Seattle hospitals from injuries received in a Saturday night house fire that left two other family members dead.

Marshall Bosanko died at about 12:30 a.m. at Children's Hospital & Medical Center, the victim of smoke inhalation, said hospital spokesman Dean Forbes. His mother, 34-year-old Verona Bosanko, died at 7:30 p.m., said Virginia Mason Medical Center spokesman Randy Hurlow. She had been in a coma in intensive care for 38 hours following hyperbaric treatment for smoke inhalation, Hurlow said.

Firefighters pulled Marshall, his brother, Reid, 4; his sister, Deanna, 1; and his mother from the one-story house at about 10 p.m. Saturday.

Snohomish County fire investigators, who have not determined the fire's cause, were expected to return to the Marysville house in the 9100 block of 48th Drive Northeast today, said spokeswoman Jan Jorgensen.

She said investigators have ruled out an electrical fire, but have no reason to think the fire was arson. Autopsies were scheduled for today.

Friends and family members - including Bosanko's husband - had been with Bosanko in the hospital before she died, Hurlow said. Bosanko and her husband had been separated for a month, Jorgensen said. He was notified of the fire in Seattle.

Deanna, who was found in a playpen in the front room, was pronounced dead at the scene. Reid died in the emergency room of a local hospital. The brothers were found in their mother's bedroom.