Around 4:20 p.m., aerial footage captured by NBC Chicago Sky 5 showed authorities swarming part of the parking lot for 31st Street Beach near the city's Prairie Shores and Lake Meadows neighborhoods. At least 15 marked Chicago police vehicles, an ambulance, fire truck and a large crowd of officers could be seen near the roundabout off East 31st Street near the Edwin C Berry Playground, video showed. No additional information was immediately available. #breakingnews #chicago #chicago #southside #chicagobeach