(Carbondale, IL)  —  Authorities are searching for the person who shot a Carbondale police officer during a high-speed chase.  Officials say cops began chasing a car last night after hearing gunshots in the 700-block of North Robert A. Stalls Street.  A suspect in the tan, four-door vehicle driving away from the area at a high rate of speed opened fire at the pursuing police cars, hitting one of the officers.  That officer was hospitalized in serious condition. Police continue to investigate. Anyone with information should call Carbondale Police at 457-3200.