TOKYO (Reuters) - Japanese public broadcaster NHK issued a false alarm about a North Korean missile launch on Tuesday, just days after a similar gaffe caused panic in Hawaii, but it managed to correct the error within minutes. It was not immediately clear what triggered the mistake. Related Searches Missile Alert False Alarm HawaiiHawaii Missile False AlarmFalse Missile Alert HawaiiMissile Launch HawaiiBallistic Missile Alert Hawaii "We are still checking," an NHK spokesman said. NHK's 6.55 p.m. alert said: "North Korea appears to have launched a missile ... The government urges people to take shelter inside buildings or underground." The same...