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The Pacific Santa Ana drillship. Image courtesy of Pacific Drilling.

An accident aboard a Chevron-operated oil rig killed one worker  Tuesday in the Gulf of Mexico.

According to the Bureau of Safety and Environmental Enforcement (BSEE), the accident occurred on the Pacific Santa Ana drillship about 200 miles south of Lake Charles, Louisiana in 4,800 feet of water.

The incident happened as the rig was beginning drilling operations for Chevron, but further details haven’t been released.

There were no other injuries reported and personnel remain on the drill ship.

No spills were reported.

Both the rig and the crew members were supplied by Pacific Drilling, Reuters said.

The BSEE said Tuesday that Chevron has shut down operations on the drill ship.

U. S. Coast Guard and BSEE inspectors traveled to the rig and began collecting evidence and taking statements, the BSEE added.

The Pacific Santa Ana drillship is a Samsung 12000 design capable of operating in 12,000 feet water depth with a maximum drilling depth of 40,000 feet, according to Pacific Drilling.