Authorities said an elderly man was moving out of his home near 98th and Hamlin on Wendesday, and a caretaker called police after finding 50 pounds of explosives under the stairs in the basement.
The Cook County bomb squad was working to dispose of a live grenade that was found at a waste transfer station in the far south suburbs on Friday.
Police officers and dogs have been searching two suburban schools, after officials found a bomb threat written on one of the buildings.
Members of the Chicago police bomb squad were checking out an abandoned truck parked near the rental car facility at O’Hare International Airport on Tuesday afternoon.
A woman who found homemade explosives while preparing an Aurora home for an estate sale.