The Metropolitan Police are just one of several departments in the region increasing security around movie theaters following the early morning shooting at a Colorado theater that left at least 12 dead and dozens injured.
"That directive was given as soon as we were made aware of this incident," explains Assistant Chief of Police Lamar Greene.
He says all theaters, especially ones showing the new Batman film, are priority. "Dark Knight, it is my understanding is that was the film that was being premiered, we will be paying close attention to theaters that are previewing that movie," says Greene.
Baltimore and Montgomery County Police have also increased security around theaters.
And Greene says the public should be be vigilant in reporting suspicious activity. "There's always concern a copy cat crime may be committed, however we just want to ensure these movie theaters are safe," he says.
Theater employees are searching bags at the Regal Gallery Place in downtown Washington before screenings of "The Dark Knight Rises."