SANFORD, Fla. (AP) - Authorities say a central Florida doctor who died in a fire at his home last year apparently killed himself.

The Seminole County Sheriff's Office announced Monday that Dr. Marin Dan Radulescu's death had been ruled a suicide.

The Orlando Sentinel reports that Radulescu suffered third-degree burns over 80 percent of his body in an April 2011 fire. Detectives initially believed the fire was an accident related to refueling a model airplane. But officials now believe Radulescu poured gasoline over his head and body as he sat in a chair in the garage and then set himself on fire.

 Radulescu was rushed to Orlando Regional Medical Center that morning and died a short time later. Radulescu had worked at the hospital as a bariatric surgeon.