Four workers at the Formosa Plastics Corp facility in Point Comfort were airlifted to area hospitals and fifth taken by ambulance Friday after what authorities are calling a "flash fire".
According to a press release from the plant, the accident happened while five employees were performing maintenance on an out-of-service tower in one of the plant units.
Relatives of the injured employees have been notified. The extent of the injuries was not clear Friday.
The exact cause of the accident has not been released.