Zena Issa

The Michigan Department of Corrections says an inmate died at a hospital near the prison.

The department says she was responsive during transport to the hospital.

Michigan State Police are already investigating the deaths of two other inmates who died in May.

Emergency calls obtained by Michigan Public reveal one caller told dispatchers a death may have been caused by an overdose.

The toxicologist performing the autopsy says the final results are not ready.

but he has ruled out an overdose as the cause of death.

The Department of Corrections did not answer questions about the possibility of an overdose.

For NPR News, I'm Zena Issa in Ypsilanti, Michigan.