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Holmes set to plead not guilty by reason of insanity in theater shooting

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(CNN) — Attorneys for accused Colorado movie theater shooting suspect James Holmes filed their intent to plead not guilty by reason of insanity on behalf of their client.

Holmes is accused of masterminding a mass shooting on July 20, 2012, during a showing of the Batman movie “The Dark Knight Rises” at a movie theater in Aurora, Colo. Twelve people were killed.

He faces 166 charges, including murder, attempted murder and weapon offenses. Police said Holmes was dressed head to toe in protective tactical gear and had an arsenal that included an AR-15 rifle, a 12-gauge shotgun and a .40-caliber pistol. Investigators said he had acquired nearly 1,000 bullets or shotgun rounds.

Federal agents have said the 25-year-old former University of Colorado doctoral student planned the attack for months. His trial is scheduled to begin next February. If convicted, Holmes faces the death penalty.

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