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James Holmes due to enter plea in Colorado theatre massacre (VIDEO)

James Holmes, accused of killing 12 people in a Denver, Colorado movie theater last July, is expected in court on Tuesday to enter a plea.

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People pray together near a cross erected in a memorial setup across the street from the Century 16 movie theatre on July 30, 2012 in Aurora, Colorado. (Joe Raedle/AFP/Getty Images)

James Holmes, accused of killing 12 people in a Denver, Colorado movie theater last July, is expected in court on Tuesday to enter a plea.

Attorneys for Holmes, 25, have indicated that he may plead "not guilty by reason of insanity," the Morning Express reported

In the event his lawyers do use the insanity plea, a judge has ordered that Holmes be forced to take a "truth serum" and undergo a "narcoanalytic interview" to determine if he was legally insane at the time of the July 20 shootings.

The Associated Press wrote that the drugs administered during a narcoanalytic interview — a decades old process — lowered the inhibition of defendants. 

Reuters cited Arapahoe County District Judge William Sylvester as saying the drugs were "medically appropriate."

Sylvester said Holmes also could be given a polygraph examination as part of an evaluation at the state mental hospital.

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However, Holmes' lawyers have said a narcoanalytic interview and a polygraph would violate their client's rights.

According to Reuters, prosecutors have 60 days after Holmes' plea is entered to decide whether to seek the death penalty.

Fifty-eight people were hurt in the rampage at a midnight showing of the Batman film "The Dark Knight Rises" in the Denver suburb of Aurora.

Prosecutors say Holmes spent months carefully planning the attack.

A former neuroscience graduate student at the University of Colorado, Holmes failed oral board exams in June.

http://www.globalpost.com/dispatch/news/regions/americas/united-states/130312/james-holmes-plea-colorado-theatre-massacre