The man accused of carrying out a massacre at a screening of Batman reportedly tried to tell the University of Colorado "he was going to kill people".
Fox News reports that James Holmes sent a notebook with details of his plan to a psychiatrist there. But it is claimed the parcel sat unopened in the post room for as long as a week before its discovery on Monday
The star of The Dark Knight Rises, Christian Bale, has visited a Denver hospital to meet survivors of the Aurora cinema shootings.
James Holmes, the 24-year-old man accused of killing twelve people at a cinema in Colorado, has made his first appearance in court.
The US president met with families and survivors as thousands gathered for an evening memorial service to remember the victims.