South Korea won 2-0 on Friday, hours after state president Lee Myung-bak visited islets which are disputed territory between the two countries.[break]
The presidential visit prompted Japan to recall its ambassador from Seoul.
The match in Cardiff, Wales, was seen as potentially raising diplomatic tensions, and a South Korea flag with a slogan supporting sovereignty of the islands was reportedly displayed on the field.
FIFA says it was "made aware of this incident," and its disciplinary panel chairman will study pictures from the stadium.
FIFA statutes prohibit political statements at matches.
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