There was panic on Wall Street as markets took a plunge after computer hackers took control of the Associated Press Twitter account.
The financial chaos was due to a false tweet claiming President Obama had been injured in two explosions at the White House.
Normality was restored a few minutes later when the information was proved to be false.
<a href="https://twitter.com/ap">ap</a> hackers didn't follow AP Style. An "official" tweet would have looked something more like this: (REPOST) <a href="http://t.co/J1o3HYv5jM" title="http://twitter.com/prsarahevans/status/326756222214750208/photo/1">twitter.com/prsarahevans/s…</a></p>— Sarah Evans(prsarahevans) 23 avril 2013
Please Ignore AP Tweet on explosions, we’ve been hacked.— Sam Hananel (@SamHananelAP) 23 avril 2013
<a href="https://twitter.com/ap">ap</a> hack came less than an hour after some of us received an impressively disguised phishing email.</p>— Mike Baker (MikeBakerAP) 23 avril 2013