A suspicious package was delivered to the University of Colorado-Denver earlier this week.
In a report by the Associated Press, the package turned over to authorities is believed to have been sent by shooting suspect James Holmes.
Multiple sources have reported that the package includes a notebook with drawings and descriptions of a mass attack. The package was addressed to a school psychiatrist.
Holmes is accused of shooting dead 12 people and wounding 58 in a packed movie theatre in Aurora, Colorado on July 20th. He is due to appear in court for the second time this Monday.
Meanwhile, the first victim in the tragedy was laid to rest on Wednesday in Colorado. More victims are expected to be buried in their respective hometowns this weekend and early next week.