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Insanity plea expected for accused movie-theater shooter James Holmes

James E. Holmes at his first court appearance Monday, July 23, 2012.

James E. Holmes at his first court appearance Monday, July 23, 2012.

(WTVR/CNN) – Lawyers for accused movie-theater killer James Holmes are expected to use an insanity plea. They are due in court Monday and are expected to ask a judge to change the plea.

Holmes is charged with killing 12 people and wounding of dozens more after opening fire inside a Denver-area movie theater last summer.

Prosecutors have already announced they planned to seek the death penalty against Holmes. Earlier this year, a judge entered a not guilty plea on behalf of Holmes over the objection of his attorneys.

Holmes faces 166 counts of murder, attempted murder and other crimes for the attack.