Authorities found a duffel bag in the room yesterday with three zippers glued shut. A bomb squad safely opened it and the Chicago Tribune reports that investigators found ammunition.
The motel manager says Kazmierczak also left a laptop computer behind. It was seized by investigators.
The former NIU student returned to the school on Valentine's Day and killed five students before killing himself. He was said to have had some psychological problems, but wasn't known to be violent.