Freight train owner Canadian National said 10 railcars carrying "various substances" derailed.

Immediately after the derailment, authorities issued a mandatory evacuation order for all people living within a one-mile (1.6 km) radius of the derailment site, excluding residential areas, Xinhua news agency reported. Is surrounded by.

The evacuation order was lifted around 1:30 p.m. Local media quoted the fire department as saying that Canadian National's two hazard teams were dealing with propane and that "there were no existing leaks". There was a small leak, but that evaporated without any dangerous readings.

At a news conference Thursday afternoon, Matteson Mayor Sheila Chalmers-Currin said about 300 people were affected by the evacuation order. The reason for the derailment of the train is not yet known.

Local media reported that the derailment occurred at about 10:35 a.m. local time and that no one was evacuated from the train cars.