CHICAGO, Broadcasting News Corporation : At least six people have been killed in a mass shooting at an Independence Day parade in Highland Park, Ill., an affluent, mostly white suburb north of Chicago. The police said at least two dozen more people were injured yesterday. Here are live updates on the shooting. Police officers recovered a gun and are searching for a suspect. A perimeter was put in place around the downtown area. The police said the gunman had used a rifle and shot from a rooftop. “By all means, at this point, this appears to be completely random,” a top law enforcement official said. News collected from The New York Times.