This was just days after Hawaii's Governor Ige apologizing for their own blunder at scaring the shit out of Hawaiian residents about an ICBM heading towards them.
NHK issued an immediate correction and an apology five minutes later on its evening news. Claiming the source came from the "J-Alert system" run by the Japanese government to issue warnings to its citizens about missiles, tsunamis and other natural disasters. Government officials denied it and said the system was not to blame for the false alarm.
Makoto Sasaki, a spokesman for NHK, apologized, saying that “staff had mistakenly operated the equipment to deliver news alerts over the internet.”
Twitter naturally had a blast as millions went on a frenzy wondering how this could have happened. 5 Minutes of being under the impression a Nuke is heading your way can cause one hell of a panic! Fortunately, Japan's known for their orderly manners and conduct.