The popular gaming machine, which includes a digital video disc (DVD) player and will eventually offer Internet access, is Sony´s most profitable product. The company said it had shipped 1.4 million in the month after the game´s March 4 launch in Japan.

The console and its memory card have been designated as ``general-purpose products related to conventional weapons´´ because they contain components that could be used for military devices such as missile guidance systems, the Kyodo news agency quoted industry sources as saying.

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