CARROLLTON, Ohio (AP) — A coroner says a 14-year-old boy whose body was found in a shallow grave in Ohio died from acute fentanyl intoxication.

Carroll County’s coroner has ruled the manner of Jonathan Minard’s death as homicide. Coroner Dr. Mandal Haas said in a statement Monday that a homicide ruling means only that the death was caused by the actions or omissions of another person. He says those deaths may or may not result in criminal prosecution.

Investigators found the body April 19 at a Washington Township farm, roughly 90 miles southeast of Cleveland. The Dellroy teen was reported missing April 14.

Carroll County Sheriff Dale Williams’ release says Haas’ determinations “are not conclusive” of a criminal investigation. He says authorities are continuing to investigate the circumstances surrounding the death.