Chicago police have opened an arson investigation into a Sunday afternoon fire at the Swift Mansion, a historic house in the Bronzeville neighborhood. Firefighters responded at about 11:20 a.m. to 4500 S. Michigan Ave. after a fire broke out on the mansion’s third floor. The Chicago Fire Department said the fire was extinguished around noon. At about 2:45 p.m. the fire started again in the ...