Two subcontractors working for French oil company Total have been killed in an explosion at a refinery in the Belgian city of Antwerp.
Another person reported as missing was found safe.
The company said the blast happened in a steam system of a unit producing petrol.
The refinery was evacuated, and Total said there was no fire and no impact on the environment.
A local newspaper reported that there had been a problem with the installation for several days, and subcontractors had been called to fix a leak.