NEW YORK (CBSNewYork) — Matt Curley, 28, disappeared Monday after a group dive off on the south shore of Oahu not far from Diamond Head. A team of divers has been working in shifts searching the area for the St. Luke’s-Roosevelt Hospital doctor, but the search has been suspended.

“Our big concern is for the family right now. Our thoughts and prayers are with them,” said Matt Zimmerman, owner of the tour group Island Divers.

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Dr. Matt Curley (credit: CBS 2)

The group identified a scuba fin, found in the water Tuesday, as the same type and size Curley was using.

“We feel really bad for the family that’s waiting and for, obviously, the people that were out there that day,” said Courtney Krantz of SeaBreeze Watersports.

Curley had gone on an excursion to a site known as “Baby Barge,” a popular resting place for reef sharks and green sea turtles. When the dive ended, he was not with the group.

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Zimmerman said the people in the group, including Curley, were all certified, trained divers.

“This person was separated from the group. I personally wasn’t there. From what I’ve been able to ascertain, we don’t know what happened,” he said.

Hawaii’s Department of Commerce and Consumer Affairs says it has no record of complaints against the company. The Coast Guard says it has an open investigation into Island Divers, but would not elaborate.

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