Coast Guard officials say an oil rig fire 25 miles southeast of Grand Isle, La., has been out after an explosion off the coast of Louisiana that killed two workers and sent four people to hospitals. Two others were believed to be missing.

There was no immediate word if any oil had spilled from the platform.

Coast Guard spokesman Drake Foret said four people were taken to West Jefferson Medical Center near New Orleans, The Associated Press reported.

Coast Guard aircraft and boats are searching for two missing people.

AccuWeather.com reports the weather in the Gulf of Mexico is calm, which didn’t hinder rescue efforts. The day is sunny and around 60 degrees. Ocean temperatures are in the high 70s. For people living on the coast, the calm weather is also good news. Wind is blowing 10 mph to the southwest so the smoke drift was blowing away from Louisiana and out to sea.

The rig is operated by Black Elk Energy Co., a company based in Houston. The Twitter bio of Black Elk CEO John Hoffman calls the business “the fastest growing company in the Gulf of Mexico.”