Remember that photo of the hijab woman walking past a body in the aftermath of the London bridge terror attack that went viral?
@SouthLoneStar originally tweeted the photo with the caption: "Muslim woman pays no mind to the terror attack, casually walks by a dying man while checking phone".
However, Twitter has just revealed it was put out by a fake Russian bot - and although the photo itself was real, the context in which it was released was not.
The US Congress says it's one of thousands of accounts designed specifically to seed misinformation and discontent.
Social Media Presenter Aziz Al-Sa'afin spoke to Duncan Garner.
Watch the video.