A person of interest connected to an attack where six people were gunned down six people and many others were injured during a shooting at an Independence Day parade in Highland Park, a wealthy suburb of Chicago, has been captured following an hours-long manhunt. 

He killed at least six people and wounded about two dozen more from a rooftop perch before fleeing, Lake County Sheriff's Office Deputy Chief Chris Covelli said during an afternoon news briefing. Five of those killed were found at the scene and were adults, authorities said. Another was taken to a hospital where they died. 

A child was among those hurt and was critically injured, authorities said.