Passenger ferry rescue launched off South Korea coast

A major rescue operation is underway off the coast of South Korea after a passenger ferry sent a distress signal saying it was sinking. It’s unclear how many people are on board the ship which was taking hundreds of high school children on a field trip to Jeju island. At least one person has been confirmed dead although a local news source had earlier declared all students and teachers had been rescued. It’s not cleared why the ship ran into difficulties although heavy fog had set in overnight leading to cancellations of many ferry services to the islands.