AKIPRESS.COM - Two seaplanes carrying tourists from the same cruise ship have collided in south-eastern Alaska, with at least four people dead and two missing, BBC reports.

One plane was carrying 11 people when it hit the other, which had five people aboard, near Ketchikan, the Associated Press reports.

Ten of those aboard the first plane survived and were taken to hospital.

Three of those killed were aboard the other aircraft, while it is unclear which plane carried the fourth victim.

Both planes were from the Royal Princess cruise ship which was en route from the Canadian city of Vancouver to the Alaskan city of Anchorage.

The incident occurred in the vicinity of a popular tourist lodge that runs excursions to the nearby Misty Fjords National Monument.