LONDON, July 12 (Reuters) - Emergency services were responding on Friday to an incident at a gas storage plant in Margam, south Wales, police said.
They gave no details of the incident but one Twitter report talked of a "hell of a bang" at the BOC company site.
David Rees, a local politician, said he had heard there were no reported injuries.
The police said they were being supported by the fire and ambulance service.
Reporting By Andrew MacAskill; editing by Stephen Addison