Medical alarm triggered near North Olcott Avenue in Niles Heard on: Red Center Dispatch 00:14 00:00 Ambulance two and engine two, medical alarm, (number withheld) North Olcott Avenue in Niles. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Ambulance two and engine two, medical alarm, (number withheld) North Olcott Avenue in Niles. 00:07 Group 200 and twenty-three, (number withheld) North Olcott Avenue, medical alarm. 00:12 Ambulance two and engine two. 2026-11-09 20:31 UTC Medical Emergency N Olcott Ave, Niles, IL 60714 View on map