ISLE ROYALE, Mich. (AP) — A 55-year-old man has died while scuba diving to a shipwreck at Isle Royale National Park in Lake Superior.

Park officials say Lloyd W. Krohn of Wyoming, Minn., was among three divers planning to explore a Canadian cargo vessel called the Kamloops, which sank in 1927. Shortly after reaching their target depth of about 200 feet, the other divers noticed that Krohn was having trouble.

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They sent Krohn to the surface, where he was spotted by crew members with the charter boat they had taken. He was not breathing when pulled aboard.

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Park superintendent Phyllis Green says the Kamloops is considered a dive for experts because it’s so far down. The shipwreck has been closed temporarily while Krohn’s death is investigated. Green says an autopsy was planned.

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