Aurora - The gunman who allegedly opened fire on a Batman movie screening in Colorado, killing 12 people, is being kept in solitary confinement for his own protection, police said on Sunday.
James Holmes, a 24-year-old graduate student, was detained shortly after the shooting early on Friday at a midnight screening of The Dark Knight Rises in Aurora, just outside Denver.
Asked if Holmes was being held in solitary, Aurora Police Department spokesperson Jacki Kelley told AFP: "He's by himself," adding: "It's part of the protection process for him.
"Understandably this might be something that could upset other people. And it's part of the obligation to provide a safe environment for all the inmates in the jail," she said.
Holmes is being held in an Arapahoe County detention facility, she said.
Holmes is accused of bursting into a packed movie theatre dressed in full body armour and gas mask, then throwing two tear gas canister-like devices into the crowd and opening fire on the film-goers as they scrambled to escape.