Eight contract workers were injured over the weekend while working at the Chevron Phillips chemical plant in Port Arthur.
Spokesperson Melanie Samuelson told 12News there was a fire at the facility around 4 a.m. Saturday.
"We regret that this occurred and our thoughts are with those who are injured," said Samuelson.
Seven of the employees were taken by ambulance to Christus Hospital St. Mary according to Hospital Spokesperson Danielle Pardue. She said of those, six have been treated and released. She said one is listed in critical but stable condition.
A spokesperson for the Port Arthur Fire Department told 12News that firefighters were put on standby, but were not called to assist.