A man who covered his face with a grey hoodie as he briefly appeared on television has been identified by broadcaster YTN and Yonhap news agency as the captain of the South Korean ferry's which sank.
As he was being questioned at the Mokpo Coast Guard Office, he said: "I am really sorry and deeply ashamed."
Nine people, including five students and two teachers, were confirmed dead, but many expect a sharp jump in that number because of the long period of time the missing have now spent either trapped in the ferry or in the cold seawater.
Dozens were injured, while 179 survivors have been rescued so far.
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