If James Holmes is found not guilty by reason of insanity in the Colorado theater massacre, he would be committed indefinitely to the state mental hospital, and in theory he could be released someday. But psychiatrists and attorneys say that's highly unlikely.

Jury selection starts Tuesday for Holmes, who is charged with killing 12 people and injuring 70 in the July 2012 attack. Prosecutors are seeking the death penalty, and Holmes entered an insanity plea.

People found not guilty by reason of insanity in Colorado can be released from the mental hospital if they convince the courts they're no longer a threat.

Experts say that would be tough for Holmes to do given the nature of the attack. They also say prosecutors would fight any privileges for Holmes.