Japanese television reports on Wednesday that North Korea may have conducted a second nuclear test stirred new anxieties, but one of the networks later issued a retraction and officials said it was most likely a false alarm.Japanese public broadcaster NHK and Nippon Television, a commercial network, reported that "tremors" had been detected in North Korea, leading the government to begin investigating whether a second blast had taken place. The reports cited unidentified government sources.
Nippon Television later apologized. "At this point, we have not yet confirmed that North Korea has carried out a second nuclear test," the network said. "While we will continue to gather information, we would like to make a correction and offer our apology."