The Brief A man was shot and killed Sunday night in Round Lake Beach. Investigators believe the victim and suspect knew each other and say there is no ongoing threat to the public. What we know:Police responded around 9:30 p.m. to reports of gunfire in the 1200 block of Sunnyside Court in Round Lake Beach. The victim was taken to a nearby hospital by the Greater Round Lake Fire Protection District, where he later died. Anyone with information is asked to contact the Round Lake Beach Police Department's nonemergency line at 847-546-2127.