Updated at 7:18 a.m. ET: Fourteen people were killed and at least 50 others wounded early Friday when a gunman opened fire at a midnight screening of the summer blockbuster "The Dark Knight Rises" near Denver, authorities and witnesses said.
Aurora Police Chief Dan Oates told reporters that 10 people died at the scene and four others died after being taken to local hospitals. At least 50 other people were injured, Oates said, including a six-year-old girl.
Witnesses said tear gas also went off in the theater.
A 24-year-old male suspect was apprehended in the shopping center's parking lot, Oates said.
The incident occurred in the Century 16 Movie Theaters at the Aurora Town Center, police told NBC News. Aurora is a suburb less than 10 miles east of downtown Denver.
NBC station KUSA-Denver cited a witness as seeing a black-clad 6-foot-tall man wearing a riot helmet, goggles and bullet-proof vest.
However, many people attended the film dressed in Batman-related costumes.
Watch live video from KUSA
Witnesses said the gunman entered the theater through an emergency exit door.
The suspect was found in possession of a gas mask, Oates said. Ammunition was found in the suspect's car, police said.
Citing officials, NBC News' Pete Williams reported that the shooter had three weapons -- a rifle and two handguns. The suspect's car has Tennessee plates but authorities believe he was living locally.
Oates said there was no evidence of additional suspects.
The suspect's apartment building in north Aurora was evacuated after the suspect made a statement to police about possible explosives at his home, Oates said.
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