The Butler County coroner's staff confirmed that an autopsy was performed on a person Sunday morning after police were called to an incident on the 500 block of West New Castle Street Saturday night.
Butler Police Chief Bob O'Neill said that the person died of a medical problem.
When asked about the incident, Deputy Coroner Larry Barr confirmed only that an autopsy had been performed at 8 a.m. Sunday. He deferred to police to release the person's name.
The results of the autopsy are pending toxicology testing.