Still of Twitter tweet about the Sydney cafe siege
Media playback is unsupported on your device
Video

Sydney siege: How news of siege unfolded on Twitter

Two people have died, along with an Islamist gunman, after commandos stormed a Sydney cafe which had been held under siege for 16 hours.

BBC News looks at what was tweeted as the story unfolded.

Go to next video: Commandos end Sydney cafe siege