FORT WAYNE, Ind. (WOWO): It's still not known why a 64 year old man was found dead in a fish pond Tuesday morning and it won't be known for some time. 

The Allen County Coroner's Office says the autopsy of the man was inconclusive. 

An investigation is underway into whether he had a medical event before falling into the koi pond in the backyard of his residence on Thornton Drive on the northeast side of Fort Wayne. 

Final autopsy reports will not be available for several weeks. The coroner's office has not identified the man.