Prosecutors said the man accused in the Aurora movie theater mass shooting made threats and was banned from the University of Colorado, Denver, after failing a key exam six weeks before the rampage.
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They made the claims about James Holmes in court Thursday in an attempt to persuade a judge to let them see records from the university.
While the school has already provided 100 pages of records, prosecutors want access to Holmes' courses, emails and documents about his withdrawal from the school several weeks before the incident.
A university spokeswoman has disputed that Holmes was banned but said his access to restricted areas was canceled because he left his graduate program in June.
Prosecutors also said professors had urged Holmes to get into another line of work before the shooting. Attorney Karen Pearson didn't disclose the source of their information, and nor did she elaborate on the nature of the threats.
A defense lawyer objected to the release of the records, and Holmes' defense said any medical or school records are inadmissible because it would violate doctor-patient confidentiality.
Holmes, 24, is accused of killing 12 people and wounding 58 others during a screening of "The Dark Knight Rises" on July 20.
Holmes grew up in Rancho Penasquitos and graduated from Westview High School in 2006.
10News learned Holmes also interned at the Salk Institute in La Jolla.
Holmes graduated with honors from the University of California, Riverside, two years ago with a bachelor's degree in neuroscience and enrolled in graduate school at the University of Colorado in June 2011.
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