Washington - Police arrested a man alleged to have shot at least 10 people dead at a midnight premier of "The Dark Knight Rises," the latest Batman movie and are searching for the another, following chaotic scenes, KDVR, a local Fox affiliate, reported.
At least 10 people were killed and up to 40 were wounded early on Friday when two gunmen wearing gas masks and body armour opened fire at a crowded cinema premiere in the US city of Aurora, media reported.
According to SkyNews a makeshift hospital has been set up at the mall to treat those wounded in the attack.
The masked gunmen reportedly opened fire after 30 minutes of the showing and also set off a smoke or tear gas bomb.
Brenda Stuart, from 850 KOA Radio, told Sky News: "This started with a midnight showing of the new Dark Knight movie and the theatres were packed that were showing this movie.
"People inside tell us they thought it was part of the movie. They heard what they thought were firecrackers, loud bangs and all of a sudden they saw the bullets flying.