ANCHORAGE, Alaska -- A small plane carrying four people including three park rangers is missing in southwest Alaska.

A Coast Guard HC-130 crew is among searchers looking for the Dehavilland Beaver between Swikshak Bay and King Salmon, about 285 miles southwest of Anchorage.

The Coast Guard says the plane was carrying Katmai National Park rangers. It was reported missing after it did not arrive in King Salmon as expected.

Coast Guard officials say the plane left Swikshak Bay at 2:45 p.m. Saturday for a flight that takes less than an hour.