CFD diver who died on search for missing boater signaled he was OK - then sank

Chicago Fire Department Diver Juan Bucio surfaced from the murky water of the Chicago River and, when asked by his partner if he was all right, nodded in the affirmative.

It was his last communication. Moments later Bucio sank to the bottom of the river and by the time his fellow divers found him and hauled him from the water he had no pulse.

The details of Bucio's death, which occurred while searching for missing boater Alberto Lopez the evening of May 28, were contained in an autopsy report released Tuesday.

According to the report, Bucio had a rare heart condition that caused him to become distressed. His death was caused by "asphyxia with depletion of air from diving tank due to cardiac arrhythmia due to lymphocytic myocarditis."

His death was determined to be an accident.

For the full story, click here.