A number of police officers have been assaulted, and several arrests have been made after a group of purported teenagers arrived at the cinema within the complex, the local media outlet reported.
Police say they were called just before 5:35 p.m. GMT on 23 November.
The police have detained five teenagers. A 13-year-old girl, a girl and boy aged 14, and a 19-year-old man were held on suspicions of assaulting police officers. Another boy, aged 14, was arrested for obstructing police.
An alleged photo of the intruders has been posted online.
The incident reportedly happened during a showing of the movie Frozen 2 at the cinema. People were reportedly gathering to watch the movie when the intruders arrived, according to the Birmingham Live news outlet.