MARYSVILLE – Ralph L. Sweet III of Marysville was identified May 27 as the 60-year-old man who drowned May 24 at the Edmonds Underwater Park.

The Snohomish County Medical Examiner’s Office reported that the cause of the accidental drowning was related to cardiac arrhythmia.

County Fire District 1 spokeswoman Leslie Hynes said earlier that Sweet was an experienced diver who was with a few others to do maintenance at the park. The man told his fellow divers about 10 minutes earlier that he was going to shore, she added.