James Holmes, prime accused in the mass killings at the Batman Denver premiere, had mailed a notebook containing details about the massacre to a psychiatrist at the University of Colorado prior to the shooting, Fox news reported Wednesday.
The University of Colorado's Anschutz medical campus confirmed it had received a suspicious package which was given to the authorities Monday but the University did not identify the sender.
An unidentified law enforcement source reportedly told Fox Network that the package, allegedly sent by Holmes, was in the university mailroom since July 12 but remained unopened until its discovery Monday.
Like Us on Facebook
According to the network, the notebook contained "full details about how he was going to kill people, drawings of what he was going to do in it, and drawings and illustrations of the massacre". It is said that the book included drawings of stick figures shooting other stick figures.
The report also said police and FBI agents were called to the University of Colorado's Anschutz medical campus in Aurora Monday morning after the psychiatrist, who is a professor at the school, reported receiving a package believed to be from the suspect.
Although that package turned out to be from someone else and harmless, a search of the Campus Services' mail room turned up another parcel sent to the psychiatrist with Holmes' name in the return address, the source told Fox News.
But the psychiatrist has not been identified and there has been no confirmation from any authorities whether Holmes had any previous contact with him.
A spokesman for the FBI's Denver office said the Bureau could not speak about any aspect of the investigation, citing the gagging order issued Tuesday by the Judge on the case that strictly limits what attorneys, law enforcement and court staff can say publicly about the case.
The suspect, James Holmes, had been a neuroscience graduate student and had received a federal grant at the university until he withdrew from the program weeks before the shooting. The program reportedly includes professors of psychiatry.
Fox Network's report surfaced on the same day as the first funeral was held for one of the 12 people killed in the shooting. Gordon Cowden, 51, the oldest victim of the shooting, was a real estate appraiser who had taken his teenage daughters to the movie theater. His daughters escaped unharmed.
Denver-area hospitals that are treating survivors said Wednesday that they would eliminate or limit medical bills for the casualties, some of whom had no medical insurance and faced huge costs.