The Associated Press (AP) Twitter account was compromised on Tuesday. A tweet was published from the @AP handle that said there were two bomb explosions at the White House, and the President injured.  

As a result of the tweet and the panic that followed, in less than five minutes, stocks crashed, wiping off some $136 billion off the S&P, and setting the Dow Jones industrial average plunging down. The market bounced back once the tweet was revealed to be false.

AP confirmed the hack, and says is working to fix the issue. In the meanwhile, the AP Twitter account stands suspended.