Crews in Alaska are searching for a plane that went missing with 10 people on board while over Norton Sound off Nome.

The Cessna Caravan left Unalakleet at 2:37 p.m., and officials lost contact with it less than an hour later, according to David Olson, director of operations for Bering Air. The aircraft was 12 miles (19 kilometers) offshore, according to the U.S. Coast Guard.

A plane with 10 people onboard was reported missing near Nome, Alaska's westernmost major city, according to officials.