Defense attorneys in the Aurora theater shooting case have subpoenaed information that a witness has suggested University of Colorado officials may be trying to hide.

In a heavily redacted motion made public Monday, defense attorneys ask the judge overseeing the case to review the records in private to determine if they are favorable to the defense’s case.

The redactions to the motion are so dense that it is not possible to determine what kind of records are being sought from the University of Colorado.

In the motion, the defense says the witness “is an important prosecution witness” who “was repeatedly interviewed by law enforcement agents” in the weeks following the July 2012, attack on the Century Aurora 16 theater. According to the defense motion, the witness “believed that the University had secreted his (redacted) records because of his connection to the case.”

James Holmes was a neuroscience student at the University of Colorado Anschutz Medical Campus before withdrawing from school about a month prior to the shooting.