A stomach virus has made nearly 100 passengers ill on a Princess Cruise Lines ship sailing from South Florida, as people on another of its liners complained of gastrointestinal illness.

A sightseeing plane with a pilot and four cruise ship passengers on board crashed into steep mountainous terrain in south-east Alaska, killing everyone on board, the US Coast Guard said.

The world’s largest cruise ship was kept in port for intensive cleaning after a second outbreak of gastrointestinal illness in two voyages made 108 people ill.

Police in boats and on the quay guarded the Queen Elizabeth 2 as it docked in the north Egyptian port of Alexandria today after a security threat against the British-built cruise liner.

Passengers on the Queen Mary 2 today called off a planned sit-in to protest a last-minute itinerary shift after the cruise operator said it give passengers full refunds.