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.

The plane was flying from the Alaskan coastal city of Unalakleet to another city along the Bering Sea coast, Nome—a journey that usually takes less than an hour.

Rescue operations are underway Friday after a small plane with 10 people went missing over Alaska’s Norton Sound shoreline — an inlet of the Bering Sea. The aircraft owned by Bering Air Caravan