Ketchikan, Alaska - Five people aboard a sightseeing floatplane were killed when it crashed in the Misty Fjords National Monument, south of Ketchikan, Alaska on Tuesday.

The five included the plane's pilot and four Sun Princess cruise ship passengers, who were on the second day of a weeklong, round-trip cruise from Seattle, Washington, Princess cruise spokeswoman Julie Benson said in a statement.

The pilot sent out a distress signal late Tuesday afternoon while on a planned tour of Misty Fjords National Monument, near Ketchikan.

When the single-engine DeHavilland Beaver did not return, "rescue helicopters were dispatched to the location of the flight seeing route," Benson said. "These helicopters subsequently spotted the float plane which ... crashed in rugged terrain."

No additional information was immediately released, but Benson said the company was working closely with local authorities to investigate the circumstances of the crash.

Meanwhile, Princess Cruises has permanently canceled all excursions with the tour company Taquan Air, operator of the plane, Benson said.

"We are devastated to report that our passengers and the plane's pilot perished in the accident," Benson said. "Our shoreside care team is doing everything possible to help their families through this difficult tragedy, and we share in their grief."

The passengers were among 1,950 people aboard the Sun Princess.

Alaska State Trooper Jodi Williams identified the victims as pilot Joseph H. Campbell of Ketchikan and cruise ship passengers William F. Eddy and Jeanne J. Eddy of Jacksonville, Florida, and Marianne M. McManus and Paul J. McManus of Cherry Valley, Massachusetts.

ANCHORAGE, Alaska (AP) -- A former Keene, New Hampshire couple was among those killed in the crash of an Alaskan sightseeing plane this week.
  
William and Jeanne Eddy, both 59, died, along with Mrs. Eddy's sister, brother-in-law and the pilot.

The Eddys lived in Keene before moving to Jacksonville, Florida. They also had a home in Baltimore. Jeanne Eddy was a retired executive vice president of the Keene-based insurance company, The Main Street America Group.

Their plane crashed Tuesday.

Also killed were 60-year-old Paul McManus and 56-year-old Marianne McManus of Leicester, Massachusetts; and the plane's pilot, Joseph Campbell of Ketchikan.