HONG KONG, Jan. 21 (Xinhua) -- A moderate earthquake measuring 5.9 on the Richter scale jolted the seas northeast of Manado Indonesia at 4:31 a.m. Monday (2131 GMT, Sunday), the Hong Kong Observatory said in a news bulletin here Monday morning.

    According to the Hong Kong Observatory, the epicenter was initially determined to be at 2.4 degrees north latitude and 127. 0 degrees east longitude, about 250 kilometers north-northeast of Manado Indonesia.