CHICAGO — The Chicago Fire Department honored fallen firefighter Juan Bucio with a badge ceremony Tuesday.
Bucio, 46, died May 28 after he got separated from his partner during a search for a missing man in the Chicago River. That man was later found dead.
The Cook County Medical Examiner's Office on Tuesday ruled Bucio's death accidental. The cause is listed as "asphyxia, with depletion of air from diving tank, due to cardiac arrhythmia due to lymphocytic myocarditis." Lymphocytic myocarditis is a rare cause of cardiovascular disease that can lead to heart failure.
Bucio's badge on Tuesday was added to a wall honoring firefighters who have died in the line of duty.
Mayor Rahm Emanuel delivered remarks.