Three workers were hurt in an overnight explosion at a factory in Columbus.

The Columbus Fire Department was called to Faurecia USA just after 2 a.m. on a report of a fire. 

According to fire investigators, an explosion occurred when a Faurecia employee was filling a propane tank for use by a forklift truck. The exact cause of the explosion is under investigation.

Three Faurecia workers were hurt in the explosion. One person was believed to have serious burn injuries and was taken by helicopter to an Indianapolis hospital. The two other employees were treated at the scene.

Faurecia, which was evacuated prior to the arrival of firefighters, closed operations for the remainder of the morning shift. According to Columbus Fire Department Investigators, modified operations have resumed this morning.

Firefighters were on the scene until almost four a.m.