Sheriff Mat Lutz said Celeste Fronsman, 29, of Canton, was pronounced dead at Ohio State University's Wexner Medical Center, the Columbus (Ohio) Dispatch reported.
A passerby found Fronsman Sunday near Adamsville, about 70 miles east of Columbus, with a rope around her neck, police said. The victim told the passerby she had been attacked, possibly raped and set on fire, the Zanesville (Ohio) Times reported.
In a 911 call, the passerby -- whose name was not reported -- told a dispatcher, "I have a woman right here. She's burnt severely. She's been raped and she's been beat up," the Dispatch reported.
"In my 24 years in law enforcement it's the most gruesome thing I've ever seen," Lutz said.
Lutz said officials spoke to several people with ties to Fronsman but have yet to arrest a suspect, the Dispatch said.