The Los Angeles Police Department says it knows of no specific threats regarding screenings of "The Dark Nights Rises," made by Burbank-based Warner Bros, but officers will increase the police presence at some theaters Friday purely as a precaution.
The blockbuster movie is playing on hundreds of screens across Southern California, and many shows are already sold out.
In Aurora, Colorado, 12 people were killed and 50 injured Friday when a gunman opened fire at a midnight screening of the film. Police have a suspect in custody.
Los Angeles police officials are not requiring every theater showing the film to be checked; each division will make an individual decision as to how often to check theaters, police said.
Sources say there is concern is over a possible copycat incident.
The LAPD checked out the ArcLight in Hollywood during an overnight screening, but no security issues were found, a watch commander said.
"There's nothing that suggests that there's anything sinister planned beyond what happened in Colorado," said Sgt. Enrique Mendoza, watch commander of the LAPD Hollywood division. "What happened in Colorado appears to be an anomaly, an isolated incident."
A manager at the ArcLight declined to comment.
-- Andrew Blankstein and Amy Kaufman