April 30, 2013 11:20 am Raw: Robot Investigates Suspicious Object on Michigan Avenue A robot investigates an object found taped to a flag pole Tuesday morning near the Wrigley Building. Police closed Michigan Avenue from Wacker to Ohio during the investigation. Local 2:14 DePaul University students set up encampment as pro-Palestinian protests continue at campuses nationwide 0:37 Illinois' largest water park to open for 2024 season in June 2:22 Search for suspect in murder of CPD officer Luis Huesca continues 0:54 Nearly 86k pounds of prosciutto sold in multiple states including Illinois recalled 0:40 ‘The Daily Show' and Jon Stewart coming to Chicago, Milwaukee for DNC and RNC