LOS ANGELES (Reuters) – Authorities on Monday instructed residents of Plaquemine, Louisiana to seek shelter from the flames and chlorination at Olin Corp’s plant on Dow Chemical property.

A third-party tenant at Dow’s Olin facility, the Olin, set the flames out, according to an official of Iberville parish sheriff’s office. He also said that there were no immediate casualties.

According to Reuters, the official stated that “we continue monitoring the air quality in this area.”

Olin didn’t immediately reply to Reuters’s request for comment.

State police have also closed Louisiana Highway 1 in both directions near the plant, the department said on Twitter (NYSE:) https://twitter.com/LAStatePolice/status/1516241157361123337?s=20&t=VGJIMAwm2BPrUQBOdRzBTQ.

In a situation of emergency, an order for shelter requires that people stay inside and do not move unless absolutely necessary.