Unknown Vehicle Accident (Unable to Locate)

Timeline

1. 4:15am
   iPhone crash alert for unknown vehicle accident on Northland Dr just north of 7 Mile Rd; Plainfield alerted
2. 4:17am
   Dispatch confirms Med 2 priority for unknown accident on Northland just north of 7 Mile; responding unit expected to arrive momentarily
3. 4:17am
   Responding unit reports vehicle swerving with hazards on; location being searched
4. 4:18am
   Responding unit saw only a vehicle swerving with hazards on; actual crash location not yet located
5. 4:18am
   Vehicle swerving in southbound lane; actual crash location still being located
6. 4:18am
   Swerving vehicle is now behind the responding unit; unit asks dispatch if it should turn around
7. 4:18am
   Dispatch checking with county on which lanes the crash was in; unit saw nothing in the northbound lanes
8. 4:20am
   Rockford checked up and down Northland and was unable to locate; call canceled