GILBOA, Ohio-AP

Two people who died while diving in a stone quarry had frozen regulators, making it difficult to breathe, authorities said.

The water temperature in Gilboa Quarry was about 38 degrees when Sherry Eads, 43, of Brookville, and Daniel Frendenberg, 21, of Union, went diving Saturday morning, according to the Putnam County Sheriff's Office.

Someone from the quarry, about 50 miles southwest of Toledo, called 911 to report that divers were down, authorities said.

A third member of the diving group, Jason Balsbough, 21, of Clayton, also had regulator problems but was able to surface by himself, said Sgt. Brad Nelson. He was in fair condition at Lima Memorial Hospital.

None of the divers were related, Nelson said. Autopsies were to be conducted by the Lucas County Coroner's Office in Toledo, and the case remains under investigation. Authorities said they do not suspect foul play.

Sheriff James Beutler said the quarry is a popular spot for divers, with many coming from Michigan, Indiana and Canada.

A person who answered the phone at the quarry declined to comment Sunday.