Police say the gunman who killed five people at a suburban Chicago business was a 15-year employee who was being fired.
Aurora Police Chief Kristen Ziman says 45-year-old Gary Martin ``was being terminated'' Friday afternoon before he opened fire at the Henry Pratt Co. warehouse in Aurora.
Five police officers also were shot and wounded before Martin was located in the warehouse. Ziman says Martin was shot and killed.
Aurora is about 40 miles (65 kilometres) west of Chicago.