Japan has filed a complaint with the World Trade Organisation to challenge South Korea over its import bans and demands for additional testing on Japanese food following the 2011 Fukushima disaster.

South Korea extended its ban on Japanese fishery imports in September of 2013 to cover imports from eight Japanese prefectures, including Fukushima. It claimed the move was necessary and reflected safety concerns.

No details of Japan's complaint were immediately available however Japan says several measures taken by South Korea violate the WTO's sanitary and phyto-sanitary (SPS) agreement.