There was a loud impact and noise before the ferry off a coast of South Korea began sinking, a passenger who had been rescued from the vessel told YTN news television.
One person has been found dead in the ferry wreckage, according to a coast guard official.
The president of South Korea, Park Geun-hye, earlier ordered all available vessels and special operations divers to the rescue operation.
More top news
Eagle-eyed Twitter users spotted that a campaign photo the party claimed was in Stoke on Trent, was actually in Bolton.
The body of a man from Chichester who died after travelling to Syria to fight Islamic State arrived back at Heathrow to a hero's welcome.
London Mayor Sadiq Khan hinted that he could go further in his bid to tackle pollution in the capital.