Rail operator CSX says that a chemical fire at a Kentucky train derailment that caused evacuations has been extinguished and residents can return to their homes. Authorities reviewed air monitoring data and decided it was safe to let people return to the small town of Livingston. The CSX train derailed around 2:30 p.m. Wednesday near the remote town with about 200 people in Rockcastle County. Two of the 16 cars that derailed carried molten sulfur, which caught fire after the cars were breached. It’s believed that the fire released the potentially harmful gas sulfur dioxide.

CSX said Thursday the train, which was transporting cars, had to make an emergency stop to avoid hitting a semitruck that had bottomed out on a crossing.

Heavy equipment moved in at the scene on Friday to start the process of off-loading freight in the railcars.

Kentucky State Police said the derailment happened just before 3 p.m. on Thursday. 

Fifty cars derailed in a fiery, mangled mess on the outskirts of East Palestine, Ohio, on Feb. 3. 

This Norfolk Southern train temporarily set up at the corner of South 15th Street and West Hill Street looks like a normal train traveling from Point A to Point B. But this week, its purpose is solely for hands-on learning.

State officials said crews had emptied the tank cars of ethanol and had removed them from the accident site to a nearby constructed pad. 

A train reportedly derailed in the Bronx in New York City at around 7:20 a.m. Sunday morning.

Dixie Highway (U.S. 31 W) is expected to remain closed until further notice while crews clean up after Monday's train derailment.