South Korean police has questioned the chief of the presidential security service as the two agencies clashed over attempts to detain impeached President Yoon Suk Yeol.

Park Jong-joon, the chief of the Presidential Security Service (PSS), appeared for police questioning on Jan. 10 in connection with allegations of obstructing the execution of an arrest warrant for President Yoon Suk-yeol on Jan.

Tibet's earthquake of magnitude 6.8 that killed 126 and damaged four water reservoirs this week highlights the risks from a hydropower building spree by Asian giants China and India in one of the world's most remote, quake-prone regions, experts say.