BREAKING NEWS
The alert was sent to cellphones on Saturday, saying  there was a threat “inbound to Hawaii” and that  residents should seek shelter. “This is not a drill,” it added. 

It was apparently the mistake of 1 employee and it's very hard to believe...

Tell me what you think in the comment section 

Mainstream reports for what it's worth:

http://edition.cnn.com/2018/01/13/us/hawaii-false-alarm-react/index.html

https://www.theguardian.com/us-news/2018/jan/13/hawaii-ballistic-missile-threat-alert-false-alarm

https://nypost.com/2018/01/13/hawaii-missile-alert-caused-by-employee-pushing-wrong-button/