Accused killer Luigi Mangione wants a laptop in jail so he better understand the evidence against him, according to his lawyers. In a court filing made public on Monday, Mangione’s lawyers requested a computer solely for him to review over 15,000 pages of documents and thousands of hours of video related to his murder trial for the killing of UnitedHealthcare CEO Brian Thompson in December. The lawyers said the computer would not have the ability to connect to the internet or be used for entertainment, reported The Guardian. They added that the request is not unheard of at the detention center where he is being held, and he would not have enough hours in the day to review the evidence without a computer. A judge has not yet responded to the request, but prosecutors are reportedly growing concerned over reports that witnesses have faced intimidation—which Mangione’s attorneys deny, reported Newsweek. Mangione, 26, faces state and federal charges, including first-degree murder, using a firearm to commit murder and interstate stalking. Mangione’s next federal court hearing is scheduled for April 18.