South Korean President Park names an ex-top judge as the country's new prime minister

South Korean Prime Minister Chung Hong-Won leaves from the Central Government Complex on April 27, 2014 in Seoul, South Korea.

South Korean President Park Geun-hye named on Thursday a former supreme court justice as prime minister to replace previous incumbent Prime Minister Chung Hong-Won.

Chung resigned over the government's inadequate response to the April 16 ferry disaster that killed more than 300 passengers.

Ahn Dai-hee will be mandated to oversee the reform of government bureaucracy, Park's spokesman Min Kyung-wook said.

Park also accepted the resignation of the director of the National Intelligence Service and the presidential Blue House chief secretary for national security, Min said.

(Reporting by Jack Kim; Editing by Choonsik Yoo)