Members of the Japan Self-Defence Forces deploy Patriot Advanced Capability-3 (PAC-3) missiles at the Defence Ministry in Tokyo
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Japan deploys anti-missile batteries over N Korea threat

9 April 2013 Last updated at 13:49 BST

Japan has deployed Patriot anti-missile batteries in the centre of Tokyo over growing concern that North Korea may be preparing a new missile test.

The BBC's Rupert Wingfield-Hayes is in Tokyo and says while there is concern about North Korean threats, these measures are precautionary.