A Wyoming, Minn. man died after an accident during on a shipwreck dive at Isle Royale National Park Saturday morning.
The Associated Press reports Lloyd W. Krohn, 55, was one of three divers planning to explore a 250-foot Canadian cargo vessel called the Kamloops, which sank after a severe storm in December 1927.
The ship is located about 300 feet from the north shore of Isle Royale near Todd Harbor, according to the Daily Mining Gazette.
Park officials said once divers reached their target depth of about 200 feet, Krohn began having an unknown issue. UpperMichigansSource.com said the other two divers attempted to assist Krohn, but had to send him to the surface after he became unconscious.
The charter boat crew brought him aboard, but he was not breathing. Krohn was pronounced dead at the scene by park ranger medical personnel.
The Kamloops shipwreck is considered an expert dive because of its depth, the Associated Press says.
"Divers understand the risks involved in diving at such extreme depths, but accidents can happen," park Superintendent Phyllis Green said. The area has been closed to diving temporarily while the death is investigated.
Krohn's body was sent the Keweenaw County Medical Examiner's Office in Michigan to determine the cause of death.