Prosecutors say the suspect in the Colorado theater shooting made threats and was banned from the University of Colorado after failing a key exam six weeks before the rampage.
They made the accusations about James Holmes in court Thursday as they tried to convince a judge to let them see records from the university, where Holmes had been a graduate student.
They also claim professors had urged Holmes to get into another line of work before the shooting. Attorney Karen Pearson didn't disclose where their information came from, and prosecutors did not give further details on the nature of the threats.
Defense lawyer Daniel King objected to the release of the records, calling the prosecution's request a "fishing expedition."
Holmes is accused of killing 12 people and wounding 58 others in a July 20 shooting at an Aurora theater.