The Douglas County, Kan., Sheriff's office has identified the man who was rescued from Clinton Lake on Sunday but died the next day.
James Michael Whitaker, 33, was at a family gathering Sunday afternoon in Bloomington Park. He was swimming from the shore to a pontoon boat when he disappeared under the water.
Bystanders pulled him to shore and performed CPR until the man was taken to a hospital. Authorities are trying to determine what affected Whitaker.