The man who opened fire at the University of Nevada Las Vegas campus, killing three people, was a former university professor who was reportedly turned down for a position at UNLV, according to NBC News, and now, police say he mailed envelopes containing an unknown white powder to 22 separate, apparently random universities around the country. The shooter, 67-year-old Anthony Polito, reportedly had a target list of people at UNLV and at East Carolina University, where he previously worked.
The envelopes, none of which had a return address, were intercepted at a postal facility in nearby Henderson, Nevada. Police believe that they intercepted all the envelopes sent, but warn people working at educational institutions around the country to be aware of suspicious mail.