FALSE ALARM: 'American Assassin' sparks 911 calls of reported theater shooting

THE WOODLANDS, Texas (KTRK) -- The Las Vegas mass shooting has people on edge understandably, and that includes people who decided to go to the movies last night in The Woodlands.

A group of people who went to the Cinemark Theatre on Lake Robbins Drive last night got a scare while watching the movie "American Assassin."

The movie features a lot of violent gun battles, and for some audience members, the sound of those gunshots were jarring enough that it caused chaos in the theater.

During a major shootout in the film, police said some in the audience believed there was an actual shooting happening outside.

A couple of people ran outside, warning other theater patrons to get out.

Police rushed to the theater after calls to 911, but cleared the scene after realizing the gunfire was just from the movie.

Expert: Las Vegas concert-goers likely to experience PTSD

People can experience mental and emotional trauma after experiencing such horrors as the Las Vegas shootings.

2 things you must do to survive a mass shooting

A former FBI agent says swift action will save your life in a mass shooting.

Report a typo to the ABC13 staff