A terrifying tragedy unfolded at a midnight screening of the new Batman film in the Denver suburb of Aurora, Colorado on Friday morning. A masked gunman entered a crowded theater where "The Dark Knight Rises" was playing and opened fire on the patrons, killing 12 and wounding dozens of others.
The attack began at 12:30 a.m., according to an Associated Press report. Take a look through the Storify collection of tweets (below), collected by Poynter's Julie Moos, to see how news of the shooting unfolded on Twitter in the early hours of July 20.
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[Hat tip, @AntDeRosa]