The audience at a screening of Joker in Long Beach, California fled the cinema after false reports of a shooting.
The evacuation comes after another California cinema cancelled screenings of Joker last week following a “credible threat”.
Police were dispatched to the Regal Edwards cinema on Saturday 5 October after they received calls that there were shots coming from the theatre, according to the Long Beach Post.
Joker, starring Joaquin Phoenix as Batman’s sadistic nemesis, has proved controversial for its portrayal of violence and there have been heightened security fears surrounding its release.