Residents of Xenia, Ohio were shocked to learn of a train derailment that occurred in the city on Thursday, prompting a controlled release of toxic chemicals on board.

The derailment occurred when a Norfolk Southern freight train carrying hazardous materials derailed, causing a number of cars to overturn and leak hazardous chemicals. In response to the incident, local officials advised residents to evacuate the area and warned of the potential for an explosion.

In light of the incident, local emergency responders have been discussing the need for better planning in the event of a similar emergency. “We need to be prepared for any potential disasters like these,” said Xenia Fire Chief, Thomas Smith.

At least one person was hospitalized as a result of a multi-vehicle crash in Xenia that occurred shortly after the train derailment. The cause of the crash is still under investigation.

The controlled release of chemicals from the train is expected to take several days, and officials are urging residents to remain vigilant and follow safety protocols.