There is reportedly a large police presence at Viking Plaza in Cedar Falls, Iowa.
A local news station has reported that there are nearly a dozen police cars, several fire trucks, and several ambulances at the scene currently. There are no further details at this time. (source) 6:30 p.m. ET January 12, 2018
According to video from the scene, it appears as the response is due to a very serious auto accident in the plaza area. It is unclear how many cars were involved. (source) 6:47 p.m. ET January 12, 2018