Prosecutors want James Holmes executed for last year's attack on a Colorado movie theater that killed 12 and wounded 70.
They announced their intention to seek the death penalty against Holmes in court on Monday. Last week prosecutors said they rejected an offer from Holmes' attorney to have him plead guilty to avoid the death penalty. Prosecutors said the offer to have Holmes spend life in prison wasn't a serious attempt at plea bargaining.
Holmes is charged with multiple counts of murder and attempted murder for the July 20 assault on a midnight screening of "The Dark Knight Rises." A judge entered a not guilty plea on Holmes' behalf last month.