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Photo: The Canadian Press. All rights reserved.

Defense attorney Daniel King leads his team to court for an arraignment for suspected theater shooter James Holmes in district court in Centennial, Colo., on Monday, July 30, 2012. Holmes has been charged in the shooting at the Aurora theater on July 20 that killed twelve people and injured more than 50. He is scheduled to be arraigned on Monday. (AP Photo/Ed Andrieski)

Prosecutors have charged the suspect in the Colorado theatre rampage with 24 counts of murder.

Twenty-four-year-old James Holmes also was charged Monday with 116 counts of attempted murder.

Twelve people were killed, and 58 people were wounded or injured. The breakdown of the charges was not immediately clear.

Holmes also is charged with one count of possession of explosives. Authorities say he booby-trapped his apartment.

Holmes was arrested shortly after the rampage during a midnight showing of the new Batman movie.

Legal analysts expect his case to be dominated by arguments over his sanity.

Holmes was a student at the University of Colorado Denver before withdrawing last month.