During a press conference, Ziman revealed that none of the five civilians killed have yet been identified, and that five officers hit by gunfire were airlifted from the scene. A sixth officer was treated for a knee injury.
A motive for the shooting has not yet been determined.
Kendall County officials were first called to the scene at roughly 1:24 p.m. local time. Police from around the area, several medical units and SWAT teams, and the ATF were also on site. Following initial reports of an active shooter, several schools were placed on lockdown, and residents in the area were advised to avoid traveling near the area.
Although Aurora police indicated that they were responding to shooter at the Arlo Steel company at 641 Archer Avenue, reports also indicated a police presence at the Henry Pratt building just south of the Arlo warehouse.
— Aurora (IL) Police (@AuroraPoliceIL) February 15, 2019
Megan Jones, a local reporter for the Beacon News, tweeted that the Aurora police are "requesting as many ambulances as possible for an active shooter with many injuries."
Witness John Probst told local news outlets that that the the gunman worked at the Henry Pratt building and that the shooter had reportedly been employed by the company for some 15 years.
The Daily Herald reported that many of the victims were airlifted to the Advocate Good Samaritan Hospital in Downers Grove.
US President Donald Trump has been informed of the incident. He later tweeted out his condolences to victim and their families.