( CNN ) -- When James Holmes ' psychiatrist warned campus police at the University of Colorado how dangerous he was , they deactivated his college ID to prevent him passing through any locked doors . After a deadly movie theater assault a month later , the question of what else could have been done hung in the air . Papers released by prosecutors Thursday are allowing a peek into the troubled mind of the alleged Aurora theater killer . They roughly trace his path from abandoning psychiatric treatment to amassing guns , clips and nearly 1,000 high-caliber or high-power bullets . Dr. Lynne Fenton told university police that Holmes talked about killing people . The warnings did n't stop the spray of gunfire weeks later , on July 20 , 2012 , that took the lives of 12 people and wounded dozens more at the premiere of the Batman movie `` The Dark Knight Rises . '' It is unclear what was done with Fenton 's information . Eyewitness recalls the 'darkest night ' He threatened his psychiatrist . Along with the collection of firearms that police turned up with search warrants prosecutors have released , they found a Batman mask , a movie ticket receipt and detailed photos of the theater . Holmes also had `` numerous photos '' of himself with his hair dyed fire orange . Fenton , who works on the medical campus , contacted police in June about Holmes , according to a search warrant affidavit . `` Dr. Fenton was advising that she had been treating Holmes , and that Holmes had stopped seeing her and had begun threatening her via text message , '' the affidavit said . Holmes mailed her a frightful package . Inside were $ 400 in burned $ 20 bills , a sticky note with an infinity sign , and a spiral notebook containing a placard . Written on it : `` James Holmes , Of Life , '' according to the documents . Despite her warning and on top of the torment she 's already endured , Fenton could face more than a dozen lawsuits that blame her and the school for improperly handling Holmes ' treatment . At least 14 people have filed legal documents indicating they are planning to sue the University of Colorado Denver and Fenton for negligence . Prosecution pushes death penalty for Colorado theater shooting suspect . A long , deadly list . The prosecution documents released Thursday give a macabre portrait of the arsenal Holmes acquired before the alleged shooting : . -- Nearly 1,000 bullets or shotgun rounds ; he had ordered at least six packages from Bulkammo.com at the end of June . -- Two semi-automatic pistols , one with a laser sight . -- An assault-type rifle . -- A shotgun . -- Multiple ammunition clips . -- A 90-round magazine . -- A magazine carrier . -- Paper targets . -- Materials to booby trap his apartment . -- Multiple cellphones and computers . -- Black army boots . -- A black coat . -- A black combat helmet . -- A gas mask . The next pretrial hearing in Holmes ' case is scheduled for Wednesday . With numerous counts of murder , attempted murder and weapons offenses , the former doctoral student in neuroscience faces a total of 166 charges . Prosecutors , who made the documents public , want the death penalty .
NEW : Holmes ' psychiatrist warned campus police he was dangerous . The former neuroscience student faces 166 charges in connection with a theater shooting . Comment: He had been diagnosed as having schizophrenia and bipolar disorder, but the doctors said it's not clear if those conditions are present or just symptoms of his mental illness.