An 18-year-old woman was killed, and a 19-year-old man was injured after a shooting attack at a movie theater in California during a midnight showing of the new horror film "The Forever Purge."

According to The Hollywood Reporter, a person open fired inside the Regal Edwards Corona Crossings & RPX in Corona, California on Monday night, July 26.

Police said both victims had suffered gunshot wounds, with the man taken to a hospital having life-threatening injuries. The female, on the other hand, had died from her injuries at the scene.

Cpl. Tobias Kouroubacalis of the Corona Police Department told The Hollywood Reporter that the victims were inside the theater watching "The Forever Purge" when the shooting happened.

Regal Cinemas released a statement saying they are currently working with the local authorities on the investigation, adding that their main concern was the safety and security of their guests and staff.

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Shooting Incident in California Theater

Kouroubacalis noted that the officers arrived on the scene and located the two people suffering from gunshot wounds inside the California theater. He said the victims were likely discovered by a theater employee who came in after the movie screening of "The Forever Purge" ended. 

Kouroubacalis noted that he was informed that six tickets were purchased for the said movie showing, and the detectives were trying to track down the other moviegoers. 

Police said what happened inside the movie theater was still unknown. No gun was found at the scene. The screening of "The Forever Purge" started at around 9:35 p.m. The said horror film has a 1 hour and 44-minute runtime.

Police are calling for anyone who might have information about the incident to come forward. Kouroubacalis also called on the people at the parking lot at that time to contact them if they have seen or heard something.

People were asked to avoid the area as investigators stayed at the scene for over 12 hours. There was still no information regarding the victims, suspects, or motive.

'The Forever Purge' Horror Film

"The Forever Purge" is the latest installment of "The Purge" in 2013. The film's premise evolves on members of a clandestine movement who are no longer satisfied with one annual night of anarchy and murder.

They decide to overtake America through an unending campaign of mayhem and massacre, Miami Herald reported.

"The Forever Purge" is directed by Everardo Gout. The horror film series has all been set in a near-future where a far-right religious party was elected on a law-and-order platform.

The religious party was called The New Founding Fathers of America, and it established "The Purge," wherein laws are suspended in 12 hours, according to an NBC News report.

People are also encouraged to embrace purging freedom by killing one another to supposedly reduce their desire to kill during the rest of the year.

"The Forever Purge" touched on provocative issues such as racism, U.S. immigration policy, class divisions, and the rise of white supremacy.

The Purge arrives, but the violence and killing continue the morning after, with a shadowy group that organized a "Forever Purge" vows to rid the country of immigrants while simultaneously targeting the wealthy.

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Written by: Mary Webber

WATCH: The Forever Purge - Official Trailer [HD] - From Universal Pictures