The Coast Guard has called off a search for an unmanned boat in waters off Mount Desert Island.

The Coast Guard received a report of a 12-foot boat adrift near Raccoon Cove about 6 p.m. Saturday, triggering a search by boat. A helicopter continued the search Sunday morning, said Petty Officer Jessie Johnson. It was called off about 10 a.m. after the search failed to locate the boat.

The concern is that someone in the boat may have come to some harm, Johnson said.

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