CENTENNIAL, Colo. - The suspect in the July 20 shooting at a midnight premiere of "The Dark Knight Rises" at a Aurora, Colo. movie theater was formally charged in court today.

James Holmes is accused of opening fire inside a crowded movie theater, leaving 12 people dead and 58 more injured. He is also accused of rigging his apartment with explosives in an attempt to injure or kill anyone who tried to enter the apartment.

In court today, Holmes was formally charged with 142 criminal counts, including 24 counts of murder and 116 counts of attempted murder, two counts for each victim of the shooting. He was also charged with one count of possession of an explosive device and one count of crime of violence.

While cameras were not permitted inside the courtroom for today's hearing, witnesses say that Holmes looked dazed and confused, as he appeared at last week's initial hearing. He did not enter a plea for the charges today.

According to Colorado law, prosecutors have 60 days after they formally file charges to decide if they will seek the death penalty.

Legal experts say that the case will be heavily dominated by questions of Holmes' mental state leading up to and after the shooting.

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