People watch a TV news program reporting North Korea's earthquake, at Seoul Railway Station in Seoul, South Korea, Saturday, Sept. 23, 2017. South Korea's weather agency said an earthquake was detected in North Korea on Saturday around where the country recently conducted a nuclear test, but it assessed the quake as natural. The signs read " The weather agency said a magnitude 3.0 earthquake was detected in North Korea." (AP Photo/Ahn Young-joon)