South Korean ship fires at unidentified vessel | World | ReutersSEOUL (Reuters) - A South Korean naval ship fired at an unidentified vessel to the north on Friday after a South Korean naval vessel began sinking, the Yonhap news agency reported.
Broadcaster SBS said many sailors were feared dead on the stricken ship.
Earlier, South Korea's YTN TV network said the government was investigating whether the sinking was due to a torpedo attack by the North.
(Reporting by Cho Mee-young and Jon Herskovitz; Editing by Alex Richardson)
This could be ugly....