Lehigh County Coroner Scott Grim says an autopsy was performed Monday on the body of 38-year-old Eugene Fleysher of Saddle Brook, N.J.
But Grim said a ruling on the cause of death was deferred pending toxicology test results.
Fleysher was diving at Dutch Springs, a former cement quarry turned diving spot in Northampton County's Lower Nazareth Township, when he was found unresponsive in the water Sunday.
The (Easton) Express-Times says the 50-acre Dutch Springs quarry lake attracts about 30,000 divers a year.