At least one contractor was killed after a fire struck an offshore platform operated by Mexico's national oil company Pemex, the firm said in a statement on Sunday, adding that two others were in "grave" condition. A total of nine workers suffered injuries in the blaze on Saturday afternoon that struck the company's Akal-B platform, located in the southern Gulf of Mexico, where most of Pemex oil output originates. Five of the nine were Pemex employees while the rest were contractors from local service providers Diavaz and COTER.