N.Korea to make an important announcement at 0630 GMT after quake

SEOUL - 3 September 2017: North Korea's state television said it would carry an important announcement at 0630 GMT, after an earthquake registering magnitude 6.3 was detected near its known nuclear test site on Sunday.

The chairman of South Korea's parliament defence committee was quoted as saying the quake was likely the result of a 100 kiloton blast, which is four to five times larger than the bomb that was dropped in Japan's Nagasaki in 1945.

Kim Young-woo said he was briefed about the assessment by South Korea's military, Yonhap said.