Three teenagers were found dead in a car in Indiana

ETNA GREENE, Ind. (AP) — Preliminary autopsy results indicate three teenagers found dead in a car in northern Indiana may have died of carbon monoxide poisoning, Indiana State Police said Monday.

Police said the teenagers were unresponsive Sunday in a car in a rural area near the town of Etna Green in Kosciusko County, about 30 miles (48 kilometers) southeast of South Bend.

Preliminary results from autopsies performed Monday at the Northeast Indiana Medical Examiner’s Center in Fort Wayne point to carbon monoxide poisoning as the cause of death, but toxicology results are pending, police said.

Robert Bontrager, 18, of Rome, was in the driver’s seat, while two 16-year-old Topeka boys, Karen Miller and Nathan Yoder, were in the back seat, police said. All three teenagers died on the spot.