The Canadian National Railway train derailed around 10:45 a.m. near the 21000 block of Main Street, according to local officials. Homes close to the derailment were evacuated in wake of the hazmat situation.Officials said residences in the following areas are under a mandatory evacuation order:EVACUATION ZONEResidents were advised to prepare for a "long-term evacuation" and to take any medications or supplies with them before leaving their homes.
Residents of Park Forest and Richton Park were encouraged to contact their local departments for further instruction. The Matteson Fire Department is checking each freight car for any potential chemical leaks.No injuries have been reported. Canadian National Railway representatives are headed to the scene to lead the investigation. A Canadian National Railway official said preliminary reports indicated roughly 20 freight cars carrying various substances derailed.