James Holmes, the man who killed 12 people at a cinema in Aurora, Colorado, sent a package and details of the masssacre to a University of Colorado psychiatrist several days before the shooting.
The package was found Monday and handed over to police. Sources say it contained a letter from a "pent-up Holmes" and crude drawings of a gunman and his victims.
It is assumed that there are even more letters but the FBI says this is not satisfying "because there´s nothing that this individual could say to us, the general public, to sit back and say now I understand why you did this".
