The U.S. Coast Guard has responded to and is investigating a natural gas pipeline explosion at Lake Lery, Louisiana, and there have been no reports of injuries, casualties or pollution, it said in a statement on Sept. 9.

“At approximately 4 p.m. Thursday, a fire was ignited in Lake Lery following the loss of pressure on a 20-inch natural gas pipeline. The line has been isolated and the valves on either end of the leak have been shut off,” the Unified Command press release said.

“An overflight at 7:10 a.m. Friday identified a slight sheen that is expected to dissipate naturally,” and the cause is still under investigation.

A Coast Guard spokesperson identified the line involved as the TOCA LINE, operated by Third Coast High Point Gas Transmission LLC, adding the fire was still burning.

The spokesperson for Third Coast declined to comment.

“Preliminary information indicates a barge broke loose from its mooring and impacted the pipeline,” a spokesperson from the U.S. Pipeline And Hazardous Materials Safety Administration (PHMSA) said.

“The pipeline has been shut down and the affected section of pipe has been isolated. Remaining gas will be allowed to burn off. PHMSA will continue to monitor this event.”