A U.S. Navy crew was headed Friday afternoon to a newly formed island off the coast of North Carolina to determine if an object found there is a military device.

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The sandbar, known as Shelly Island, formed off Hatteras Island in the Outer Banks as little more than a bump in early April.

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The object found on Shelly Island is heavily encrusted with marine growth, according to WTVD.

The Dare County Emergency Management blocked access to the island on Friday, while a military bomb disposal team investigated the object.