Federal investigators say a Chicago man accused of mailing threats of rapes, killings, bombings and beheadings at a Southern Illinois University campus he attended brought himself to authorities' attention.
Investigators arrested 21-year-old Derrick Dawon Burns on Monday on eight charges related to the mailings over a yearlong span in 2012 and last year.
Online court records don't show whether Burns has an attorney. He's jailed without bond, pending a hearing Wednesday.
The FBI says Burns drew investigators' scrutiny in July when he separately called SIU-Carbondale police and the FBI and insisted a man called "Big Russ" told him about the threats.
The FBI alleges investigators traced those calls back to Burns and fingerprints on four of the seven threatening letters later were matched to Burns.