NEW : But he was `` denied access to the school after June 12 , 2012 , after he made threats to a professor , '' according to court documents . Holmes called a university switchboard nine minutes before he allegedly opened fire . Holmes , 24 , is accused of killing three people in a school shooting in Aurora , Illinois , last year . He is charged with murder and attempted murder and faces several lesser charges .
NEW : Holmes called a university switchboard nine minutes before he allegedly opened fire . Holmes , 24 , is accused of killing three people in a school shooting in Aurora , Illinois , last year . He is charged with murder and attempted murder and faces several lesser charges .