Jurors have convicted Colorado theater shooter James Holmes in the 2012 attack on defenseless moviegoers at a midnight Batman premiere in Aurora.

Holmes was found guilty on Thursday of multiple counts of murder in the first degree, a ruling that rejects defense arguments that the 27-year-old was insane and driven to murder by delusions.

The verdict would enable prosecutors to get the death penalty for Holmes who killed 12 people and wounded 70 others.

His trial began in April and the prosecutors asked dozens of victims and witnesses, who were in the theater at the time of the shooting, to testify against Holmes.

They detailed their injuries or the deaths of loved ones who had attended the midnight screening of "The Dark Knight Rises" on July 20, 2012.

According to two defense psychiatrists, Holmes suffered a psychotic break the night of the murders that prevented him from discerning between right and wrong. However, two court-appointed psychiatrists rejected the claim, saying the defendant was mentally ill that night, but not insane.

Holmes had previously pleaded not guilty by reason of insanity.  If his claim had been proven to be true, he would have been sent to a mental hospital.

However, prosecutors provided jurors with a notebook with Holmes handwriting, in which he planned a “mass murder spree” and considered theaters and times to attack for “maximum casualties.”

On Thursday, District Attorney George Brauchler showed photos of the dead during his closing argument.

"That guy, sitting right there," Brauchler said, pointing at Holmes. "He did this."