The captain of a river cruise ship that collided with a tourist sightseeing boat in the Danube River in Budapest, causing it to capsize and sink, has been taken into custody by Hungarian police. The captain, a 64-year-old Ukrainian identified only as Yuriy C., is suspected of endangering water transport leading to a deadly mass accident, according to The Associated Press, citing a police website. Divers and rescue workers are still trying to find 21 people in the Danube River. At least seven people are dead, and seven were rescued. The craft had been carrying a South Korean tour group....