Photos: 9 dead as flightseeing plane crashes in Southeast Alaska

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The wreckage of a flightseeing plane operated by Promech Air that crashed near Ketchikan on June 25, 2015.

Alaska State Troopers in Ketchikan got a report at 2:06 p.m. that the float-equipped DeHavilland DHC-3 Otter was overdue. Officials tracked an emergency locator transmitter that was activated in the vicinity of Misty Fjords National Monument, said Clint Johnson, NTSB Alaska chief.

All nine people aboard a flightseeing tour, eight of them passengers on a Holland America Line cruise ship, died Thursday in a plane crash near Ketchikan, according to the National Transportation Safety Board.

Read more: Nine dead in Southeast Alaska plane crash