By Ju-min Park and Jungmin Jang JINDO/MOKPO, South Korea Sun Apr 20, 2014 1:56am EDT Reuters) – South Korean prosecutors investigating a ferry disaster said on Sunday they would seek to extend the detention of the ship’s captain and two other crew by 10 days as they tried to determine the cause of an accident that may claim more than 300 lives. The ferry, the Sewol, was on a 400-km (300-mile) voyage from Incheon to […]