From FoxNews.com: AURORA, Colo. – James Holmes, the accused gunman in last Friday’s midnight movie massacre in Colorado, mailed a notebook “full of details about how he was going to kill people” to a University of Colorado psychiatrist before the attack, but the parcel sat unopened in a mailroom for as long as a week before its discovery Monday, a law enforcement source told FoxNews.com. Police and FBI agents were called to the University of Colorado Anschutz medical campus in Aurora on Monday morning after the psychiatrist, who is also 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’ mailroom turned up another package sent to the psychiatrist with Holmes’ name in the return address, the source told FoxNews.com. A second law enforcement source said authorities got a warrant from a county judge and took the package away Monday night. When it was opened, its chilling contents were revealed.