A Colorado judge will allow prosecutors to interrogate theater gunman James Holmes using truth serum if he pleads not guilty by reason of insanity.
Holmes is the suspected gunman involved in the movie theater shooting in Aurora, Colorado last July. Holmes has been charged with multiple counts of murder for the open shooting, which killed 12 people and injured another 58.
Colorado Judge William Sylvester ruled that prosecutors have the choice to use truth serum on Holmes in a "narcoanalytic interview" to determine whether or not he was legally insane during the July 20 shooting last year. But this is only if Holmes pleads not guilty by reason of insanity.