Five miles from Fox Lake, there is a heavy police presence in Volo after a report of two people running though a field, according to CBS Chicago.
Police set up a perimeter in Volo, late Wednesday evening.  Police received a report of two people darting through a field. 
K9 units and a police helicopter have been called in.
Earlier Wednesday, police acknowledged that they had no indication the suspects were still in the area where the slaying happened.
Lt. Joe Gliniewicz, a 32-year police veteran, was on patrol Tuesday morning in Fox Lake when he made a radio call saying he was running after three suspicious people. He was allegedly shot to death by the suspects.