Federal safety officials say the swans were to blame for the death of a Villa Park man in April.
Authorities say 37-year-old Anthony Hensley worked to keep geese away from a condo complex near Des Plaines. He fell out of his kayak and drowned while checking out the swans. Officials say he apparently got too close and was attacked.
Investigators from the Occupational Safety and Health Administration worked to determine if any safety violations contributed to Hensley's death. The agency has now cleared his employer, saying it found no violations.
Hensley was a good swimmer but ended up in the water fully clothed and wearing boots. Police say the swans continued to swim at him as he tried to make it to shore.