[Posted at 12:59 p.m. ET] A judge on Tuesday entered a standard plea of not guilty for James Holmes, the man suspected in a mass shooting at a Colorado movie theater, after he and his attorneys said they were not ready to enter a plea.

Holmes' attorneys had suggested in court documents that they might enter a plea of not guilty by reason of insanity for the shooting rampage at the theater that left 12 people dead and 58 injured on July 20, 2012.

[Posted at 1:11 a.m. ET] James Holmes, the man accused of killing 12 people in a Colorado movie theater last summer, is expected to enter a plea Tuesday.

On Monday, a judge ruled that if Holmes pleads guilty by reason of insanity, he will have to waive all medical confidentiality and turn over the name of any doctor or psychologist who may have treated him.

Judge William Sylvester also said Holmes will have to agree to a state psychiatric exam and to be drugged by doctors to assess his condition.