Police released this security camera footage of a person of interest after fireworks were set off inside a theater at the Arundel Mills Cinemark on Saturday.

Anne Arundel County police are seeking a "person of interest" in the incident that occurred Saturday at Arundel Mills Mall in which someone set off fireworks inside the Cinemark Movie Theater.

Police say someone ignited an unknown substance inside of a bottle at a screening of the movie "300: Rise of An Empire."

On Monday, police released photos of a person of interest in the case, and asked that anyone able to identify the person — or anyone with information regarding the case — contact Detective Marc Aguiar at 410-222-6155. Police did not describe the person as a suspect.

The incident occurred at about 10:11 p.m. Officers were initially called to a "shots fired" incident, but were able to determine that there were no gunshots fired. The detonation made a loud sound which caused people to think a gun had been fired, police said. The device was described as homemade, with some sort of fireworks inside. The exact type of fireworks was unknown.

Police said there were about 325 tickets sold for the 8:30 p.m. screening of the movie, and the theater was not at its full capacity.

The theater was evacuated and searched by officers and K-9s. Officers found the device and collected it as evidence, and conducted a search of the rest of the building. No other devices were located.

Police said there were no injuries related to the detonation. One person was transported to an hospital with non-life threatening injuries that police said were not as a direct result of the incident.