LONDON, June 6 (Reuters) - The European Commission is investigating the flow of allegedly fraudulent biofuels into the EU following a complaint from Germany, sources told Reuters, as a Commission spokesman said the bloc was determined to tighten oversight of the trade. Industry sources named the country as Germany. Germany's Environment Ministry, the body industry sources said had requested the investigation, did not immediately respond to a Reuters request for comment. EU classifications qualify the most advanced for valuable greenhouse gas (GHG) emissions certificates that are bought and traded by industry players at the national level. The top European biofuels body warned last week that a flood of potentially "dubious" biodiesel imports into Europe from China could trigger the collapse of the European Union's biofuels industry.

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Persons: Noah Browning, Louise Heavens Organizations: European, Reuters, Environment Ministry, EU, Thomson Locations: EU, Germany, China, Asia, Europe