Three months after a Murfreesboro doctor died of a gunshot wound at a gun range, a medical examiner says his manner of death cannot be determined.

Dr. Chester Falterman, a prominent cardiologist at St. Thomas Heart in Murfreesboro, was found with a shotgun wound to neck at a gun range on Pleasant Ridge Road in Woodbury on July 4. He was later pronounced dead.

Initially, it was believed Dr. Falterman died from a suspected suicide. After performing an autopsy, the medical examiner said the 65-year-old’s manner of death “could not be determined.”

It is unknown if Dr. Falterman’s death will be investigated farther.

Additional information was not released.